160 



family he subdivided into sections C} T pra3a, Aricia, Pustularia, 

 and the last into Trivia and Erato. He further subdivided, 

 Cyprsea into Talparia, Tigris, Lyncina and Mauritia ; and 

 Aricia into Erronea, Erosaria and Monetaria. Erato having 

 been monographed by Mr. Tryon with his " Marginellida*," 

 leaves but one section in the second family. 



Weinkauff, in 1881, proposed seven divisions, viz. : Cyprrea, 

 Aricia, Luponia, Ocellaria, Pustularia, Epona, Cyproeovula. 

 He makes Trivia a subgenus and endeavors to show how these 

 subdivisions run into each other. While this arrangement coin- 

 cides somewhat with that of Messrs. Adams, the author makes 

 the restriction that what are called genera and subgenera, with 

 him are simply sections to which he has subjoined the Adams' 

 names. 



He very properly remarks that Pustularia is more nearly 

 related to Cyprsea than to Trivia ; and follows Sowerby in 

 separating Ocellaria, holding that the eye-markings and, still 

 more, the impressions upon the sides of the shell are of sufficient 

 consequence to allow this group a separate place. 



In a study of the Cypneidae, published in the " Bull, de Soc. 

 Zool. France," for 1884, Dr. F. Jousseaume proposes to subdivide 

 the family into thirty-six generic groups, twenty-five of which are 

 new to science, the remaining eleven being adaptations of those 

 of previous authors, as follows : 



Bernaya, Jouss. (Fossil). Type B. (Gyp.) media, Desh. 



Gisortia, Jouss. Types G. (Ovula) gisortiana^sil.; G. (Gyp.) 

 mus, Linn. 



Mandolina, Bayle MSS. (Fossil). Type M. (Gyp.) gibbosa, 

 Borson. 



Zoila, Jouss. Type Z. (Gyp.) Scotti, Brod. 



Mauxiena, Jouss. Type M. ( Gyp.) Mauritiana, Linn. 



Trona. Jouss. Type T. (Gyp.) stercoraria, Linn. 



Umbilia, Jouss. T> pe U. ( Gyp.) umbilicata, Sowb. 



Vulgusella, Jouss. Type V. (Gyp.) tigris, Linn. G. lynx, 

 Linn., is here included. 



Arabica, Jouss. Type A. (Gyp.) Arabica, Linn. 



Cyprsea, Linn. Type Gyp. cervus, Linn. 



