118 THE NAUTILUS. 



SOME HOMONYMOUS GENERIC NAMES 



BY T. I). A. COCKERELL. 



In the course of some recent investigations, I found that certain 

 names proposed by Mr. C. T. Simpson (Proc. U. S. Natl. Museum, 

 1900) for groups of Naiades were homonyms. I wrote to Mr. Simp- 

 son, asking him to propose substitutes, but he has preferred to leave 

 this in my hands. The names are : 



Dallidla Simpson, t. c., p. 832 (not Dalliella Cossmann, 1895). 

 This may be called SimpsoneUa ; type SimpsoneUa purpurea (Ano- 

 donta purpurea Val.). 



Aurora Simpson, t. c., p. 849 (not Aurora Rag.. 1888, nor Aurora 

 Sollas, 1888). This may be called Diaurora. 



Anodontoides Simpson, is later than Anodontodes Hamps., but the 

 difference of a letter is sufficient to prevent homonymy. 



The name Carinella Mabille, pertaining to a tolerably distinct sec- 

 tion of Arion, is a homonym of Carinella Sowerby, 1839. If it is 

 thought worth while for the section mentioned to have a name, a new 

 one must be found. 



Geyeria Buckman, 1899, for a genus of Ammonites, is a hom- 

 onym of Geyeria Buchecker, 1880. 



Paratropis Boettger, 1891 (sect, of Omphalotropis), is a homonym 

 of Paratropis Simon, 1889. 



In 1890, Brauer and Bergenstamm gave the name Paramenia to 

 a genus of Diptera from New Zealand. In 1891, Pruvot applied the 

 same name to a genus of Aplacophora (Arch. Zool. Exper., ix). 

 Under these circumstances, Pararrhopalia Simroth, 1893, regarded 

 as a subgenus of Paramenia Pruvot, may stand as a genus; type 

 Pararrhopalia pruroti (Paramenia pruvoti Sims.). Typical Para- 

 menia Pruvot may be called Pruvotina. 



Ridleya Ancey, 1901, is later than Ridleia Dendy, 1888, but I 

 think both may stand, by the difference of a letter. 



Ischnodaclylus Cossmann, 1890, is a homonym of Ischnodactylus 

 Pels., 1886. Pasithea Hartrnan, 1881, invalidates Pasithea Meyrick, 

 1883, the first being a genus of Mollusca, the second of insects. 



Zyy&nopsis Felder, 1874, prevents the use of Zygatnopsis Roche- 

 brune, 1884, proposed for a genus of Mollusca. 



