ART. 17. AMERICAN PARASITIC COPEPODS WILSON. 17 



COPEPOD GENERA OF QUESTIONABLE VALIDITY. 



Genus CRYPT0P0DU8 Hesse, Annales des sciences naturelles, set. 5, vol. 4, 

 1S65, p. 23. 



Tj-pe of genus, Ci-yptopodus flavus Hesse, monotypic. 



From Hesse's figures and text it is impossible to recognize tliis genus. 



Genus PE0ESIMALLU8 Kr0yer, Naturhistorisk Tidsskrift, ser. 3, vol. 2, 

 1863, p. 332. 



Type of genus, PegesimaUus spiralis Kr0yer, monotypic. 



In 1869 Steenstrup claimed that Kr0yer's specimen was not a copepod but 

 an agalmid colony and recent examination of the type specimen has proved 

 this claim to be true. 



Genus UNDINA Dana, U. S. Exploring Expedition under Wilkes, Crustacea, 

 1852, p. 1092. 



Type of genus, Undina vulgaris Dana, first species. 



Giesbrecht in 1892 referred Dana's type species to the genus Calanus, and 

 distributed the other species among three additional genera. There may be a 

 question whether Dana's genus entirely disappears, but the name he chose for 

 it was used by Gould for a genus of birds in 1836, by Munsterberg for a fish 

 genus in 1842, and by Gistel for another fish genus in 1848. 



PREOCCUPIED NAMES OF COPEPOD SPECIES. 



CYCLOPS CLAU8II Heller. New name, CYCLOPS TERES. 



In the Transactions of the Linnaean Society, vol. 24, 1863, p. 200, Lubbock 

 described a new species, Cyclops olausii, which Sars afterward made a synonym 

 of Cyclops strenuus. Heller in Bericht uber die Medizin und Naturwissenschaft, 

 Innsbruck, vol. 1, 1871, p. 73, described a new species to which he gave the 

 same name. As the species are distinct Heller's specific name must be changed. 



THALESTRIS ROBUST A Brady. New name, THALESTRIS VALID A. 



In his " Die Frei-lebenden Copepoden," Leipzig, 1863, p. 201, Claus described 

 a new species found in the Mediterranean, Thalestris robnsta. Brady in the 

 Transactions of the Natural History Society of Northumberland and Durham, 

 new series, vol. 1, 1905, p. 218, also described a new species to which he gave 

 the same name. These species are distinct and the specific name given by 

 Brady is changed as above. 



NAMES OF COPEPOD GENERA OMITTED FROM THE NOMENCLATOR 



AND THE INDEX. 



^^e„or.— Risso, Histoire naturelle, Paris, 1826, p. 138. Synonym of Argulus. 



Agnathaner.—Cann, Travaux du Laboratoire de Zoologie maratime de Wime- 

 reux, vol. 6, 1892, p. 210. A valid genus. 



^mymone.— Claus, Beitrage zur Kenntniss der Entoraostraken, Part I, Mar- 

 burg, 1860, p. 11. A synonym of Tegastes. 



Anopherusa.—Templeton, Transactions of Entomological Society, London, 

 vol. 1, 1836, p. 187. A valid genus. 



Antheaclwres.—M. Sars, Forhandlingar ved de Skandinaviske Naturfor- 

 skeres, Christiania, 1856 (1857), p. 175. A valid genus. 



AmaeMS.— Kr0yer, Naturhistorisk Tidsskrift, ser. 3, vol. 2, 1863, p. 157. A 

 synonym of Elytrophora. 



Attheyella.—Braay, Monograph of Free and Semiparasitic Copepods, vol. 2, 

 1880, p. 58. A valid genus. 



