International Commission on Zoological Nomenclature

ICZN Opinions & Cases

Opinions 301–400

ICZN 1954: Opinion 301 (Case 403) Designation, under the Plenary Powers, of a type species for Procerites Siemiradzki, 1898 (class Cephalopoda, order Ammonoidea) in harmony with accustomed nomenclatorial usage. Opinions and Declarations rendered by the ICZN, 8(18): 249-260. 1954 http://biostor.org/reference/146266  http://biodiversitylibrary.org/page/34654612 

ICZN 1954: Opinion 302 (Case 384) Designation, under the Plenary Powers, of a type species, for the genus Aulacostephanus Tornquist, 1896 (class Cephalopoda, order Ammonoidea) in harmony with accustomed nomenclatorial usage. Opinions and Declarations rendered by the ICZN, 8(19): 261-272. 1954 http://biostor.org/reference/146267  http://biodiversitylibrary.org/page/34654624 

ICZN 1954: Opinion 303 (Case 445) Designation, under the Plenary Powers, of type species in harmony with current usage for the nominal genera Kosmoceras, Perisphinctes and Harpoceras (class Cephalopoda, order Ammonoidea) established by Waagen in 1869. Opinions and Declarations rendered by the ICZN, 8(20): 273-284. 1954 http://biostor.org/reference/146411  http://biodiversitylibrary.org/page/34654636 

ICZN 1954: Opinion 304 (Case 404, Case 423) Suppression, under the Plenary Powers, of five early generic names for ammonites (class Cephalopoda, order Ammonoidea) now fallen into desuetude. Opinions and Declarations rendered by the ICZN, 8(21): 285-296. 1954 http://biostor.org/reference/146268  http://biodiversitylibrary.org/page/34654650 

ICZN 1954: Opinion 305 (Case 425) Suppression, under the Plenary Powers, of the generic name Ammonites Bruguiere, 1789, and addition to the Official List of Generic Names in Zoology of the generic name Arietites Waagen, 1869 (class Cephalopoda, order Ammonoidea). Opinions and Declarations rendered by the ICZN, 8(22): 297-312. 1954 http://biostor.org/reference/146269  http://biodiversitylibrary.org/page/34654662 

ICZN 1954: Opinion 306 (Case 389) Validation, under the Plenary Powers, of the generic name Arisphinctes Buckman, 1924 (class Cephalopoda, order Ammonoidea). Opinions and Declarations rendered by the ICZN, 8(23): 313-322. 1954 http://biostor.org/reference/146270  http://biodiversitylibrary.org/page/34654678 

ICZN 1954: Opinion 307 (Case 509) Designation, under the Plenary Powers, of a type species in harmony with accustomed usage for Arnioceras Hyatt, 1867 (class Cephalopoda, order Ammonoidea), a genus based upon a misidentified type species. Opinions and Declarations rendered by the ICZN, 8(24): 323-334. 1954 http://biostor.org/reference/146271  http://biodiversitylibrary.org/page/34654688 

ICZN 1954: Opinion 308 (Case 507) Designation, under the Plenary Powers, of a type species in harmony with accustomed usage for Liparoceras Hyatt, 1867 (class Cephalopoda, order Ammonoidea), a genus based upon a misidentified type species. Opinions and Declarations rendered by the ICZN, 8(25): 335-344. 1954 http://biostor.org/reference/146272  http://biodiversitylibrary.org/page/34654700 

ICZN 1954: Opinion 309 (Case 508) Designation, under the Plenary Powers, of a type species in harmony with accustomed usage for Normannites Munier-Chalmas, 1892 (class Cephalopoda, order Ammonoidea), a genus based upon a misidentified type species. Opinions and Declarations rendered by the ICZN, 8(26): 345-354. 1954 http://biostor.org/reference/146273  http://biodiversitylibrary.org/page/34654710 

ICZN 1954: Opinion 310 (Case 407) Validation, under the Plenary Powers, of the specific name virgula Deshayes, 1831, as published in the combination Gryphaea virgula (class Pelecypoda) (Jurassic). Opinions and Declarations rendered by the ICZN, 8(27): 355-364. 1954 http://biostor.org/reference/146274  http://biodiversitylibrary.org/page/34654720 

ICZN 1954: Opinion 311 (Case 408) Validation, under the Plenary Powers, of the specific name asper Lamarck, 1819, as published in the combination Pecten asper (class Pelecypoda). Opinions and Declarations rendered by the ICZN, 8(28): 365-374. 1954 http://biostor.org/reference/146275  http://biodiversitylibrary.org/page/34654730 

ICZN 1954: Opinion 312 (Case 185) Validation, under the Plenary Powers, of the name Amoeba coli as from Grassi, 1879, to be the name for the Large Non-Dysenteric Amoeba of man and the designation of that species to be the type species of the genus Entamoeba Casagrandi & Barbagallo, 1895, and designation under the same powers of the name Entamoeba histolytica Schaudinn, 1903, to be the name for the dysenteric amoeba of Man (class Rhizopoda) (Opinion substituted for Opinion 99). Opinions and Declarations rendered by the ICZN, 9(1): 1-60. 1954 http://biostor.org/reference/146276  http://biodiversitylibrary.org/page/34610098 

ICZN 1954: Opinion 313 (Case 212) Designation, under the Plenary Powers, of a type species for the genus Eysarcoris Hahn, 1834 (class Insecta, order Hemiptera) in harmony with accustomed nomenclatorial usage. Opinions and Declarations rendered by the ICZN, 9(2): 61-70. 1954 http://biostor.org/reference/146277  http://biodiversitylibrary.org/page/34610158 

ICZN 1954: Opinion 314 (Case 386)Validation, under the Plenary Powers, of the specific name acuminata Loff & Tiflov, 1946, as published in the combination Rhadinopsylla (Rectofrontia) acuminata, as applied to the species numbered "66" by those authors (class Insecta, order Siphonaptera). Opinions and Declarations rendered by the ICZN, 9(3): 71-80. 1954 http://biostor.org/reference/146278  http://biodiversitylibrary.org/page/34610168 

ICZN 1954: Opinion 315 (Case 416) Addition of the generic name Spirula Lamarck, 1799 (class Cephalopoda) to the Official List of Generic Names in Zoology. Opinions and Declarations rendered by the ICZN, 9(4): 81-90. 1954 http://biostor.org/reference/146279  http://biodiversitylibrary.org/page/34610178 

ICZN 1954: Opinion 316 (Case 432) Rejection for nomenclatorial purposes of the Tavola alfabetica delle Conchiglei Adriatiche and Prospetto della Classe dei Vermi of S. A. Renier commonly attributed to the year 1804. Opinions and Declarations rendered by the ICZN, 9(5): 91-106. 1954 http://biostor.org/reference/146280  http://biodiversitylibrary.org/page/34610188 

ICZN 1954: Opinion 317 (Case 441) Addition of the name Cercopis Fabricius, 1775 (class Insecta, order Hemiptera) to the Official List of Generic Names in Zoology. Opinions and Declarations rendered by the ICZN, 9(6): 107-118. 1954 http://biostor.org/reference/101942  http://biodiversitylibrary.org/page/34610204 

ICZN 1954: Opinion 318 (Case 826) Addition to the Official Indexes of Rejected and Invalid Names in Zoology of the names for three nominal genera and for fourteen nominal species of the class Pelecypoda included in a paper by La Rocque (A.) distributed in microfilm in 1948. Opinions and Declarations rendered by the ICZN, 9(8): 119-130. 1954 http://biostor.org/reference/146281  http://biodiversitylibrary.org/page/34610216 

ICZN 1955: Opinion 319 (Case 181) Designation, under the Plenary Powers, of type species for the nominal genera Nysius Dallas, 1852, and Artheneis Spinola, 1837 (class Insecta, order Hemiptera) in harmony with accustomed usage. Opinions and Declarations rendered by the ICZN, 9(9): 131-146. 1955 http://biostor.org/reference/146282  http://biodiversitylibrary.org/page/34610228 

ICZN 1955: Opinion 320 (Case 506) Validation, under the Plenary Powers, of the generic name Limulus Müller (O. F.), 1785 (class Merostomata) and confirmation of the entry of that name on the Official List of Generic Names in Zoology (validation of an error in Opinion 104). Opinions and Declarations rendered by the ICZN, 9(10): 147-170. 1955 http://biostor.org/reference/146283  http://biodiversitylibrary.org/page/34610244 

ICZN 1955: Opinion 321 (Case 219) Addition to the Official List of Specific Names in Zoology of the specific name striatoradiatus Leske, 1778, as published in the combination Spatangus striato-radiatus, the oldest available name for the fossil echinoderm from the Limburg Cretaceous (Maestrichtian) commonly known as the Spatangue de Maestricht (class Echinoidea). Opinions and Declarations rendered by the ICZN, 9(11): 171-184. 1955 http://biostor.org/reference/146284  http://biodiversitylibrary.org/page/34610268 

ICZN 1955: Opinion 322 (Case 162) Validation, under the Plenary Powers, of the generic name Fulgora Linnaeus, 1767 (class Insecta, order Hemiptera) and designation for the genus so named of a type species in harmony with current nomenclatorial practice. Opinions and Declarations rendered by the ICZN, 9(13): 185-208. 1955 http://biostor.org/reference/146285  http://biodiversitylibrary.org/page/34610282 

ICZN 1955: Opinion 323 (Case 422) Validation and interpretation, under the Plenary Powers, of the specific name angulatus Schlotheim, 1820, as published in the combination Ammonites angulatus for the type species of the genus Schlotheimia Bayle, 1878 (class Cephalopoda, order Ammonoidea). Opinions and Declarations rendered by the ICZN, 9(14): 209-226. 1955 http://biostor.org/reference/146286  http://biodiversitylibrary.org/page/34610306 

ICZN 1955: Opinion 324 (Case 477) Addition to the Official List of Generic Names in Zoology of the names of twenty-one nominal genera of ammonites (class Cephalopoda, order Ammonoidea) and matters incidental thereto. Opinions and Declarations rendered by the ICZN, 9(15): 227-250. 1955 http://biostor.org/reference/146287  http://biodiversitylibrary.org/page/34610324 

ICZN 1955: Opinion 325 (Case 213) Validation, under the Plenary Powers, of the generic name Modiolus Lamarck, 1799 (class Pelecypoda). Opinions and Declarations rendered by the ICZN, 9(16): 251-266. 1955 http://biostor.org/reference/146288  http://biodiversitylibrary.org/page/34610348 

ICZN 1955: Opinion 326 (Case 340) Validation, under the Plenary Powers, of the generic name Hexarthra Schmarda, 1854 (class Rotifera) and matters incidental thereto. Opinions and Declarations rendered by the ICZN, 9(17): 267-282. 1955 http://biostor.org/reference/146289  http://biodiversitylibrary.org/page/34610364 

ICZN 1955: Opinion 327 (Case 499) Designation, under the Plenary Powers, of a type species for the nominal genus Trigonia Bruguière, 1789, in harmony with accustomed nomenclatorial usage. Opinions and Declarations rendered by the ICZN, 9(19): 283-298. 1955 http://biostor.org/reference/146290  http://biodiversitylibrary.org/page/34610380 

ICZN 1955: Opinion 328 (Case 531) Suppression, under the Plenary Powers, of the specific name caesius Cloquet, 1818, as published in the combination Coluber caesius, for the purpose of validating the specific name irregularis Leach, 1819, as published in the combination Coluber irregularis (class Reptiha, order Squamata). Opinions and Declarations rendered by the ICZN, 9(20): 299-308. 1955 http://biostor.org/reference/146291  http://biodiversitylibrary.org/page/34610396 

ICZN 1955: Opinion 329 (Case 587) Acceptance for nomenclatorial purposes of the work by Giovanni Antonio Scopoli entitled Introductio ad Historiam Naturalem published in 1777. Opinions and Declarations rendered by the ICZN, 9(23): 309-320. 1955 http://biostor.org/reference/146292  http://biodiversitylibrary.org/page/34610406 

ICZN 1955: Opinion 330 (Case 209) Validation, under the Plenary Powers, of the generic names Ligia Fabricius, 1798 (class Crustacea, order Isopoda) and Carcinus Leach, 1814 (class Crustacea, order Decapoda). Opinions and Declarations rendered by the ICZN, 9(24): 321-338. 1955 http://biostor.org/reference/146293  http://biodiversitylibrary.org/page/34610418 

ICZN 1955: Opinion 331 (Case 514) Designation, under the Plenary Powers, of a lectotype for the nominal species Asterias quinqueloba Goldfuss, 1831 (class Asteroidea) in harmony with accustomed nomenclatorial usage. Opinions and Declarations rendered by the ICZN, 9(25): 339-354. 1955 http://biostor.org/reference/146294  http://biodiversitylibrary.org/page/34610436 

ICZN 1955: Opinion 332 (Case 543) Rejection for nomenclatorial purposes of the work by William Borlase entitled the Natural History of Cornwall published in 1758. Opinions and Declarations rendered by the ICZN, 9(26): 355-368. 1955 http://biostor.org/reference/146295  http://biodiversitylibrary.org/page/34610452 

ICZN 1955: Opinion 333 (Case 193) Confirmation of Mytilus edulis Linnaeus, 1758, as the type species of the genus Mytilus Linnaeus, 1758 (class Pelecypoda) (amplification of a ruling given in Opinion 94). Opinions and Declarations rendered by the ICZN, 9(27): 369-384. 1955 http://biostor.org/reference/146296  http://biodiversitylibrary.org/page/34610466 

ICZN 1955: Opinion 334 (Case 231, Case 849) Validation, under the Plenary Powers, of the generic names Crangon Fabricius, 1798, and Alpheus Fabricius, 1798 (class Crustacea, order Decapoda). Opinions and Declarations rendered by the ICZN, 10: 1-44. 1955 http://biostor.org/reference/146297  http://biodiversitylibrary.org/page/34609454 

ICZN 1955: Opinion 335 (Case 470) Addition to the Official List of Generic Names in Zoology of the names of thirty-four non-marine genera of the phylum Mollusca. Opinions and Declarations rendered by the ICZN, 10(2): 45-76. 1955 http://biostor.org/reference/146298  http://biodiversitylibrary.org/page/34609488 

ICZN 1955: Opinion 336 (Case 497) Addition to the Official List of Specific Names in Zoology of the specific names of one hundred and twenty-two non-marine species of the phylum Mollusca. Opinions and Declarations rendered by the ICZN, 10(3): 77-108. 1955 http://biostor.org/reference/146299  http://biodiversitylibrary.org/page/34609520 

ICZN 1955: Opinion 337 (Case 486) Rejection of the generic name Arieticeras Quenstedt, 1883 (class Cephalopoda, order Ammonoidea) and addition of the name Arieticeras Seguenza, 1885 to the Ojficial List of Generic Names in Zoology. Opinions and Declarations rendered by the ICZN, 10(4): 109-124. 1955 http://biostor.org/reference/146300  http://biodiversitylibrary.org/page/34609552 

ICZN 1955: Opinion 338 (Case 365) Acceptance of the Mesozoic fossil species Gryphaea arcuata Lamarck, 1801, as the type species of the nominal genus Gryphaea Lamarck, 1801, and addition of the generic name Gryphaea Lamarck, 1801 (class Pelecypoda) to the Official List of Generic Names in Zoology. Opinions and Declarations rendered by the ICZN, 10(5): 125-180. 1955 http://biostor.org/reference/146301  http://biodiversitylibrary.org/page/34609568 

ICZN 1955: Opinion 339 (Case 176) Acceptance of the name concolor Woodbury, 1929, as published in the combination Croialus concolor, as the name for the Yellow Rattlesnake of the Colorado River Basin. Opinions and Declarations rendered by the ICZN, 10(6): 181-200. 1955 http://biostor.org/reference/146302  http://biodiversitylibrary.org/page/34609626 

ICZN 1955: Opinion 340 (Case 188) Validation, under the Plenary Powers, of dentatus Diesing, 1839, as published in the combination Stephanurus dentatus, as the specific name for the Kidney Worm of Swine. Opinions and Declarations rendered by the ICZN, 10(7): 201-250. 1955 http://biostor.org/reference/146303  http://biodiversitylibrary.org/page/34609646 

ICZN 1955: Opinion 341 (Case 588) Addition to the Official List of Generic Names in Zoology of the generic names Anguina Scopoli, 1777, and Tylenchus Bastian, 1865 (class Nematoda) (Opinion supplementary to Opinion 160). Opinions and Declarations rendered by the ICZN, 10(8): 251-270. 1955 http://biostor.org/reference/146304  http://biodiversitylibrary.org/page/34609696 

ICZN 1955: Opinion 342 (Case 343) Designation, under the Plenary Powers, of type species for the nominal genera Lipeurus Nitzsch, 1818, Colpocephalum Nitzsch, 1818, and Gyropus Nitzsch, 1818 (class Insecta, order Mallophaga) in harmony with current nomenclatorial practice. Opinions and Declarations rendered by the ICZN, 10(9): 271-298. 1955 http://biostor.org/reference/146305  http://biodiversitylibrary.org/page/34609716 

ICZN 1955: Opinion 343 (Case 532) Designation of a type species for the nominal genus Eureum Nitzsch, 1818 (class Insecta, order Mallophaga) in harmony with accustomed nomenclatorial usage. Opinions and Declarations rendered by the ICZN, 10(10): 299-312. 1955 http://biostor.org/reference/146306  http://biodiversitylibrary.org/page/34609744 

ICZN 1955: Opinion 344 (Case 27) Validation under the Plenary Powers of the generic name Truncatella Risso, 1826, and addition of that name and the names Acmaea Eschscholtz, 1833, and Acicula Hartmann, 1821 (class Gastropoda) to the Official List of Generic Names in Zoology. Opinions and Declarations rendered by the ICZN, 10(11): 313-352. 1955 http://biostor.org/reference/146478  http://biodiversitylibrary.org/page/34609758 

ICZN 1955: Opinion 345 (Case 202) Rejection of a proposal for the use of the Plenary Powers for the benefit of the generic name Rhina Latreille, [1802-1803] (class Insecta, order Coleoptera) and addition of the generic name Rhina Schneider, 1801 (class Elasmobranchii) to the Official List of Generic Names in Zoology; designation under the Plenary Powers for the genera Rhinostomus Rafinesque, 1815, and Magdalis Germar, 1817 (class Insecta, order Coleoptera) of type species in harmony with accustomed usage; validation under the Plenary Powers of the specific name barbicornis Latreille, [1803-1804], as published in the combination Rhina barbicornis (class Insecta, order Coleoptera). Opinions and Declarations rendered by the ICZN, 10: 353-388. 1955 http://biostor.org/reference/145879  http://biodiversitylibrary.org/page/34609798 

ICZN 1955: Opinion 346 (Case 338) Designation, under the Plenary Powers, for the genus Geotrupes Latreille, 1796 (class Insecta, order Coleoptera) of a type species in harmony with current usage. Opinions and Declarations rendered by the ICZN, 10(13): 389-408. 1955 http://biostor.org/reference/146307  http://biodiversitylibrary.org/page/34609834 

ICZN 1955: Opinion 347 (Case 373) Validation, under the Plenary Powers, of the generic name Lysippe Malmgren, 1865 (class Polychaeta). Opinions and Declarations rendered by the ICZN, 10(14): 409-420. 1955 http://biostor.org/reference/146308  http://biodiversitylibrary.org/page/34609854 

ICZN 1955: Opinion 348 (Case 197) Suppression, under the Plenary Powers, of the generic name Titania Meigen, 1800, for the purpose of validating the generic name Chlorops Meigen, 1803 (class Insecta, order Diptera). Opinions and Declarations rendered by the ICZN, 10(15): 421-436. 1955 http://biostor.org/reference/146309  http://biodiversitylibrary.org/page/34609866 

ICZN 1955: Opinion 349 (Case 576) Acceptance of the emendation to Enarmonia of the generic name Ernarmonia Hübner, [1825] (class Insecta, order Lepidoptera). Opinions and Declarations rendered by the ICZN, 10(16): 437-450. 1955 http://biostor.org/reference/146310  http://biodiversitylibrary.org/page/34609882 

ICZN 1955: Opinion 350 (Case 605) Validation, under the Plenary Powers, of the generic name Dionide Barrande, 1847 (class Trilobita). Opinions and Declarations rendered by the ICZN, 10(17): 451-462. 1955 http://biostor.org/reference/146311  http://biodiversitylibrary.org/page/34609896 

ICZN 1955: Opinion 351 (Case 839) Acceptance of the emendation to Dreissena of the generic name Driessena van Beneden, 1835 (class Pelecypoda). Opinions and Declarations rendered by the ICZN, 11(1): 1-24 1955 http://biostor.org/reference/146312  http://biodiversitylibrary.org/page/34649834 

ICZN 1955: Opinion 352 (Case 409) Designation, under the Plenary Powers, of a type species consistent with the intention of the original author for the genus Cummingella Reed, 1942 (class Trilobita), a genus based upon a misidentified type species. Opinions and Declarations rendered by the ICZN, 11(2): 25-46. 1955 http://biostor.org/reference/146313  http://biodiversitylibrary.org/page/34649798 

ICZN 1955: Opinion 353 (Case 533) Validation under the Plenary Powers of the generic name Hoplites Neumayr, 1875 (class Cephalopoda, order Ammonoidea). Opinions and Declarations rendered by the ICZN, 11(3): 47-78. 1955 http://biostor.org/reference/65849  http://biodiversitylibrary.org/page/34649860 

ICZN 1955: Opinion 354 (Case 610) Addition to the Official List of Specific Names in Zoology of the specific name fasciata Poiret, 1789, as published in the combination Laplysia [recte Aplysia] fasciata (class Gastropoda). Opinions and Declarations rendered by the ICZN, 11(4): 79-90. 1955 http://biostor.org/reference/146314  http://biodiversitylibrary.org/page/34649892 

ICZN 1955: Opinion 355 (Case 611) Validation, under the Plenary Powers, of the specific name punctata Cuvier, 1803, as published in the combination Laplysia [recte Aplysia] punctata (class Gastropoda). Opinions and Declarations rendered by the ICZN, 11(5): 91-102. 1955 http://biostor.org/reference/146315  http://biodiversitylibrary.org/page/34649904 

ICZN 1955: Opinion 356 Addition to the Official List of Family-group Names in Zoology of the names of the family-group taxa having Ostrea Linnaeus, 1758, and Gryphaea Lamarck, 1801 (class Pelecypoda) as their respective type genera (Opinion supplementary to Opinion 338). Opinions and Declarations rendered by the ICZN, 11(6): 103-112. 1955 http://biostor.org/reference/146316  http://biodiversitylibrary.org/page/34649916 

ICZN 1955: Opinion 357 (Case 595) Designation under the Plenary Powers (a) of a type species in harmony with accustomed usage, for the genus Chortoicetes Brunner von Wattenwyl, 1893, and (b) of the gender to be attributed to the name of that genus and to the name Austroicetes Uvarov, 1925 (class Insecta, order Orthoptera). Opinions and Declarations rendered by the ICZN, 11(7): 113-128. 1955 http://biostor.org/reference/146317  http://biodiversitylibrary.org/page/34649926 

ICZN 1955: Opinion 358 (Case 639) Designation, under the Plenary Powers, of a type species in harmony with accustomed usage for the genus Mortonella Pomel, 1883 (class Echinoidea), a genus based on a misidentified type species. Opinions and Declarations rendered by the ICZN, 11(8): 129-138. 1955 http://biostor.org/reference/146318  http://biodiversitylibrary.org/page/34649942 

ICZN 1955: Opinion 359 (Case 617) Suppression, under the Plenary Powers, of the generic name Miersia Kingsley, 1879, for the purpose of rendering the generic name Acanthephyra Milne Edwards (A.), 1881 (class Crustacea, order Decapoda) the oldest available name for the genus concerned. Opinions and Declarations rendered by the ICZN, 11(9): 139-150. 1955 http://biostor.org/reference/146319  http://biodiversitylibrary.org/page/34649952 

ICZN 1955: Opinion 360 (Case 626) Validation under the Plenary Powers of the specific name knorrii Voltz, 1828, as published in the combination Ostrea knorrii (class Pelecypoda). Opinions and Declarations rendered by the ICZN, 11(10): 151-160. 1955 http://biostor.org/reference/146320  http://biodiversitylibrary.org/page/34649964 

ICZN 1955: Opinion 361 (Case 665) Validation under the Plenary Powers of the generic name Antalis Adams (H.) & Adams (A.), [1854] (class Scaphopoda). Opinions and Declarations rendered by the ICZN, 11(11): 161-172. 1955 http://biostor.org/reference/146321  http://biodiversitylibrary.org/page/34649974 

ICZN 1955: Opinion 362 (Case 240) Rejection for nomenclatorial purposes of Geoffroy (E. L.), 1767, Traite Sommaire des Coquilles, tant fluviatiles que terrestres, qui se trouvent aux Environs de Paris. Opinions and Declarations rendered by the ICZN, 11(12): 173-182. 1955 http://biostor.org/reference/146322  http://biodiversitylibrary.org/page/34649986 

ICZN 1955: Opinion 363 (Case 240) Designation, under the Plenary Powers, of a type species in harmony with accustomed usage for the nominal genus Ancylus Müller (O.F.), 1774 (class Gastropoda). Opinions and Declarations rendered by the ICZN, 11: 183-202. 1955 http://biostor.org/reference/104509  http://biodiversitylibrary.org/page/34649996 

ICZN 1955: Opinion 364 (Case 546) Addition of the name Ancylastrum Bourguignat, February 1853 (class Gastropoda) to the Official List of Generic Names in Zoology with Ancylus (Ancylastrum) cumingianus Bourguignat, may 1853, as the type species of the genus so named. Opinions and Declarations rendered by the ICZN, 11(14): 203-214. 1955 http://biostor.org/reference/146323  http://biodiversitylibrary.org/page/34650016 

ICZN 1955: Opinion 365 (Case 523) Suppression, under the Plenary Powers, of the specific name cinereous le Conte, 1852, as published in the combination Crotalus cinereous, for the purpose of rendering the specific name atrox Baird & Girard, 1853, as published in the combination Crotalus atrox, the oldest available name for the Western Diamond Rattle Snake (class Reptilia, order Squamata). Opinions and Declarations rendered by the ICZN, 11: 215-230. 1955 http://biostor.org/reference/146324  http://biodiversitylibrary.org/page/34650028 

ICZN 1955: Opinion 366 (Case 524) Suppression, under the Plenary Powers, of the specific name multimaculata Jan, 1863, as published in the combination Crotalus lugubris var. multimaculata, for the purpose of rendering the specific name Polysticta Cope, 1865, as published in the combination Caudisona polysticta, the oldest available name for the Mexican Lance-Headed Rattlesnake (class Reptilia, order Squamata). Opinions and Declarations rendered by the ICZN, 11(16): 231-244. 1955 http://biostor.org/reference/146325  http://biodiversitylibrary.org/page/34650044 

ICZN 1955: Opinion 367 (Case 820) Addition to the Official List of Generic Names in Zoology of the generic names Toernquistia Reed, 1896 (class Trilobita) and Tornquistia Paeckelmann, 1930 (class Brachiopoda). Opinions and Declarations rendered by the ICZN, 11(17): 245-254. 1955 http://biostor.org/reference/146326  http://biodiversitylibrary.org/page/34650058 

ICZN 1955: Opinion 368 (Case 821) Addition to the Official List of Generic Names in Zoology of the generic names Jakowleffia Puton, 1875 (class Insecta, order Hemiptera) and Yakovlevia Fredericks, 1925 (class Brachiopoda). Opinions and Declarations rendered by the ICZN, 11: 255-264. 1955 http://biostor.org/reference/146327  http://biodiversitylibrary.org/page/34650068 

ICZN 1955: Opinion 369 (Case 501) Suppression under the Plenary Powers of the generic names Tylos Meigen 1800 (class Insecta, order Diptera) and Tylos Heyden 1826 (class Arachnida) and validation thereby of the generic names Tylos Audouin, (1826) (class Crustacea, order Isopoda) and Micropeza Meigen 1803 (class Insecta, order Diptera). Opinions and Declarations rendered by the ICZN, 11(19): 265-300. 1955 http://biostor.org/reference/145878  http://biodiversitylibrary.org/page/34650078 

ICZN 1955: Opinion 370 (Case 320) Validation under the Plenary Powers of the generic name Archaeocidaris McCoy, 1844 (class Echinoidea) by the suppression under the same Powers of the generic name Echinocrinus Agassiz (J.L. R.), 1841. Opinions and Declarations rendered by the ICZN, 11(20): 301-320. 1955 http://biostor.org/reference/146066  http://biodiversitylibrary.org/page/34650114 

ICZN 1955: Opinion 371 (Case 435) Suppression under the Plenary Powers of the generic name Protoechinus Austin (T.), 1860, for the purpose of rendering the generic name Pholidocidaris Meek & Worthen, 1869 (class Echinoidea) the oldest available name for the genus concerned. Opinions and Declarations rendered by the ICZN, 11(21): 321-338. 1955 http://biostor.org/reference/146067  http://biodiversitylibrary.org/page/34650134 

ICZN 1955: Opinion 372 Case 613) Suppression under the Plenary Powers of the generic names Eriechinus Pomel, 1883, and Typhlechinus Neumayr, 1889, for the purpose of rendering the generic name Lovenechinus Jackson, 1912, the oldest available name for the genus concerned (class Echinoidea). Opinions and Declarations rendered by the ICZN, 11(22): 339-358. 1955 http://biostor.org/reference/146068  http://biodiversitylibrary.org/page/34650152 

ICZN 1955: Opinion 373 (Case 627) Designation under the Plenary Powers of a type species in harmony with accustomed usage for the genus Palaeopsylla Wagner, 1903 (class Insecta, order Siphonaptera). Opinions and Declarations rendered by the ICZN, 11(23): 359-368. 1955 http://biostor.org/reference/146069  http://biodiversitylibrary.org/page/34650172 

ICZN 1955: Opinion 374 (Case 632) Acceptance of the generic name Antirhynchonella as from Oehlert, 1887 (class Brachiopoda) and the addition of that name to the Official List of Generic Names in Zoology. Opinions and Declarations rendered by the ICZN, 11(24): 369-378. 1955 http://biostor.org/reference/146070  http://biodiversitylibrary.org/page/34650182 

ICZN 1955: Opinion 375 (Case 382) Designation under the Plenary Powers of a type species in harmony with current usage for the genus Heterandria Agassiz (J.L. R.), 1853 (class Osteichthyes). Opinions and Declarations rendered by the ICZN, 11(25): 379-390. 1955 http://biostor.org/reference/146071  http://biodiversitylibrary.org/page/34650192 

ICZN 1955: Opinion 376 (Case 593) Suppression under the Plenary Powers of the generic name Lobacantha Kirby (W.), 1837, for the purpose of rendering the generic name Platypria Guerin-Meneville, 1840 (class Insecta, order Coleoptera) the oldest available name for the genus concerned. Opinions and Declarations rendered by the ICZN, 11(26): 391-400. 1955 http://biostor.org/reference/146072  http://biodiversitylibrary.org/page/34650204  

ICZN 1956: Opinion 377 (Case 656) Suppression under the Plenary Powers of the specific name tereticauda Eschscholtz, 1833, as published in the combination Triton tereticauda, for the purpose of rendering the specific name lugubris Hallowell, 1849, as published in the combination Salamandra lugubris, the oldest available name for the species concerned (class Amphibia, order Caudata). Opinions and Declarations rendered by the ICZN, 11(27): 401-410. 1956 http://biostor.org/reference/146073  http://biodiversitylibrary.org/page/34650214 

ICZN 1956: Opinion 378 (Case 619) Designation, under the Plenary Powers, of a type species in harmony with current usage for the genus Pontonia Latreille, 1829 (class Crustacea, order Decapoda), a genus based upon a misidentified type species. Opinions and Declarations rendered by the ICZN, 11(28): 411-420. 1956 http://biostor.org/reference/146074  http://biodiversitylibrary.org/page/34650224 

ICZN 1956: Opinion 379 (Case 280) Designation under the Plenary Powers of a type species in harmony with accustomed usage for the genus Sphinx Linnaeus, 1758 (class Insecta, order Lepidoptera). Opinions and Declarations rendered by the ICZN, 11(29): 421-430. 1956 http://biostor.org/reference/146075  http://biodiversitylibrary.org/page/34650234 

ICZN 1956: Opinion 380 (Case 293) Suppression for nomenclatorial purposes under the Plenary Powers of the catalogue of the collection of animals formed by Martinus Houttuyn prepared under the title Animalium Musaei Houttuiniani Index in connection with the sale of the collection in 1787. Opinions and Declarations rendered by the ICZN, 12(1): 1-32. 1956 http://biostor.org/reference/146076  http://biodiversitylibrary.org/page/34655760 

ICZN 1956: Opinion 381 (Case 644) Suppression, under the Plenary Powers, of two long-neglected specific names for the purpose of rendering the specific name hispidus Olivier, 1811, as published in the combination Palaemon hispidus (class Crustacea, order Decapoda), the oldest available name for the species concerned. Opinions and Declarations rendered by the ICZN, 12(2): 33-42. 1956 http://biostor.org/reference/146077  http://biodiversitylibrary.org/page/34655792 

ICZN 1956: Opinion 382 (Case 647) Validation under the Plenary Powers of the generic name Sicyonia Milne Edwards (H.), 1830 (class Crustacea, order Decapoda) and action consequential thereon. Opinions and Declarations rendered by the ICZN, 12(3): 43-58. 1956 http://biostor.org/reference/146078  http://biodiversitylibrary.org/page/34655802 

ICZN 1956: Opinion 383 (Case 648) Designation under the Plenary Powers of a type species in harmony with accustomed usage for the genus Hymenocera Latreille, 1819 (class Crustacea, order Decapoda). Opinions and Declarations rendered by the ICZN, 12(4): 59-70. 1956 http://biostor.org/reference/146079  http://biodiversitylibrary.org/page/34655818 

ICZN 1956: Opinion 384 (Case 97) Addition to the Official List of Generic Names in Zoology of the names of fifty-two genera of the order Carnivora (class Mammalia) including twenty-nine from which have been reported parasites common to Man. Opinions and Declarations rendered by the ICZN, 12(5): 71-190. 1956 http://biostor.org/reference/65856  http://biodiversitylibrary.org/page/34655830

ICZN 1956: Opinion 385 (Case 433) Determination under the Plenary Powers of the method to be adopted in interpreting the nominal species Coluber sirtalis Linnaeus, 1758, the common Garter Snake of the Eastern United States, and approval of the neotype designated for the foregoing species and of that designated for the nominal species Coluber saurita Linnaeus, 1766, the Eastern Ribbon Snake of North America. Opinions and Declarations rendered by the ICZN, 12(6): 191-230. 1956 http://biostor.org/reference/146080  http://biodiversitylibrary.org/page/34655950 

ICZN 1956: Opinion 386 (Case 651) Validation under the Plenary Powers of the generic name Pyramidella Lamarck, 1799 (class Gastropoda). Opinions and Declarations rendered by the ICZN, 12(7): 231-240. 1956 http://biostor.org/reference/146081  http://biodiversitylibrary.org/page/34655994 

ICZN 1956: Opinion 387 (Case 660) Suppression under the Plenary Powers of the generic name Anodon Smith, 1829, for the purpose of validating the generic name Dasypeltis Wagler, 1830, for the African Egg-Eating Snake (class Reptilia). Opinions and Declarations rendered by the ICZN, 12(8): 241-250. 1956 http://biostor.org/reference/146082  http://biodiversitylibrary.org/page/34656004 

ICZN 1956: Opinion 388 (Case 654) Suppression under the Plenary Powers of the generic name Trichopsylla Kolenati, 1863, for the purpose of providing a firm basis for the use of the generic name Chaetopsylla Kohaut, 1903 (class Insecta, order Siphonaptera). Opinions and Declarations rendered by the ICZN, 12(9): 251-264. 1956 http://biostor.org/reference/103742  http://biodiversitylibrary.org/page/34656014 

ICZN 1956: Opinion 389 (Case 674) Suppression under the Plenary Powers of two specific names for fleas published in 1802 and 1832 respectively hitherto treated as nomina dubia (class Insecta, order Siphonaptera). Opinions and Declarations rendered by the ICZN, 12(10): 265-272. 1956 http://biostor.org/reference/146328  http://biodiversitylibrary.org/page/34656028 

ICZN 1956: Opinion 390 (Case 662) Determination under the Plenary Powers of the taxon to which shall be applicable the specific name simus Linnaeus, 1766, as published in the combination Coluber simus (class Reptilia). Opinions and Declarations rendered by the ICZN, 12(13): 273-284. 1956 http://biostor.org/reference/146329  http://biodiversitylibrary.org/page/34656036 

ICZN 1956: Opinion 391 (Case 655) Emendation to Muensteroceras of the generic name Munsteroceras Hyatt, 1884 (class Cephalopoda, order Ammonoidea). Opinions and Declarations rendered by the ICZN, 12(14): 285-294. 1956 http://biostor.org/reference/146330  http://biodiversitylibrary.org/page/34656048 

ICZN 1956: Opinion 392 (Case 659) Emendation to Sandbergeroceras of the generic name Sandbergeoceras Hyatt, 1844 (class Cephalopoda, order Ammonoidea). Opinions and Declarations rendered by the ICZN, 12(15): 295-304. 1956 http://biostor.org/reference/146331  http://biodiversitylibrary.org/page/34656058 

ICZN 1956: Opinion 393 (Case 677) Validation, under the Plenary Powers of the generic name Mellita Agassiz (J.L. R.), 1841 (class Echinoidea). Opinions and Declarations rendered by the ICZN, 12(16): 305-314. 1956 http://biostor.org/reference/146332  http://biodiversitylibrary.org/page/34656068 

ICZN 1956: Opinion 394 (Case 642) Addition to the Official List of Generic Names in Zoology of the name Portunus Weber, 1795, and to the Official Index of Rejected and Iinvalid Generic Names in Zoology of the name Portunus Fabricius, 1798 (class Crustacea, order Decapoda). Opinions and Declarations rendered by the ICZN, 12(17): 315-336. 1956 http://biostor.org/reference/146333  http://biodiversitylibrary.org/page/34656078 

ICZN 1956: Opinion 395 (Case 667) Validation, under the Plenary Powers, of the specific name flavipes Olivier, 1795, as published in the combination Dytiscus flavipes (class Insecta, order Coleoptera). Opinions and Declarations rendered by the ICZN, 12(18) 337-346. 1956 http://biostor.org/reference/146334  http://biodiversitylibrary.org/page/34656100 

ICZN 1956: Opinion 396 (Case 711) Use of the Plenary Powers to permit of the addition to the Official List of Specific Names in Zoology of the specific name immigrans Sturtevant, 1921, as published in the combination Drosophila immigrans (class Insecta, order Diptera). Opinions and Declarations rendered by the ICZN, 12(19): 3470-362. 1956 http://biostor.org/reference/146335  http://biodiversitylibrary.org/page/34656110 

ICZN 1956: Opinion 397 (Case 428) Validation under the Plenary Powers of the specific name pruni Geoffroy, 1762, as published in the combination Aphis pruni (class Insecta, order Hemiptera). Opinions and Declarations rendered by the ICZN, 12: 363-376. 1956 http://biostor.org/reference/71517  http://biodiversitylibrary.org/page/34656126 

ICZN 1956: Opinion 398 (Case 547) Determination of the interpretation of the nominal species Aphis pini Linaeus, 1758 (class Insecta, order Hemiptera). Opinions and Declarations rendered by the ICZN, 12: 377-392. 1956 http://biostor.org/reference/71651  http://biodiversitylibrary.org/page/34656140 

ICZN 1956: Opinion 399 (Case 174) Designation, under the Plenary Powers, of a type species in harmony with accepted nomenclatural practice for the genera Lachnus Burmeister, 1835, and Cinara Curtis, 1835 (class Insecta, order Hemiptera). Opinions and Declarations rendered by the ICZN, 12: 393-418. 1956 http://biostor.org/reference/73810  http://biodiversitylibrary.org/page/34656156 

ICZN 1956: Opinion 400 (Case 708) Validation under the Plenary Powers of the generic name Melanargia Meigen, [1828] (class Insecta, order Lepidoptera). Opinions and Declarations rendered by the ICZN, 12(23): 4190-432. 1956 http://biostor.org/reference/146336  http://biodiversitylibrary.org/page/34656182