118 THE NAUTILUS. 



SOME HOMONYMOUS GENERIC NAMES 



BY T. r). A. COCKERELL. 



In tjie 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: 



DalUella Simpson, t. c,, p. 832 (not DaUiella Cossmann, 1895). 

 This may be called Shnpsonella ; type Simpsonella -purpurea (Ano- 

 donta purpurea Val.). 



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

 Sollas, 1888). This may be called Z)«'m<rorfl. 



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 0? 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 Aplacojihora (Arch. Zool. Exper., ix). 

 Under these circumstances, Pararrhopalia Simroth, 1893, regarded 

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

 Pararrhopalia pruvoti {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. 



hchnodactylus Cossmann, 1890, is a homonym of Tschnodactylus 

 Pels., 1886. Pasithea Ilartman, 1881, invalidates Pasilhea Meyrick, 

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



Zygcenopsis Felder, 1874, prevents the use of Zygcp.nopsis Roche- 

 brune, 1884, proposed for a genus of Mollusca. 



