INVERTEBRATE ANIMALS. 31 



Group 91.— Family CYPR^ID^ and allies. Cowries. 

 Estimated number of species : recent, 200 ; British, 3 ; 

 fossil, 64. Cretaceous, &c. 



^ Examples of Cyprcea, Trivia, Ovulum, Pedi- 

 cularia. C. aurantia, worn as an ornament 

 by the chiefs in the Friendly Islands. 

 Upper Compartment. 



Very aged C. tigris ; C. pantherina, with Balani 

 enclosed in a coating of enamel ; and many 

 others from the G-askgin cabinet. 



Group 92.— Family STROMBIDiE. (rrpo>/3oj, a spindle. 



The Strombidse are active animals, possessing large and 



well developed eyes : they are by some authorities placed 



at the head of the Prosobranchiata. Estimated number 



of species : recent, 84 ; British, ; fossil, 170. Lias, &c. 



M Examples of Pterocera, Terehellum, Stromhus, 



&c., and a very fine series of Rostellaria. 



Upper Compartment. 



Rough medallions and finished cameo, from the 

 shell of Strombus gigas. 



Section TOXIFERA. to^ov, an arrow ; <$)epco, 

 I carry. 



Group 93.— Family CONID^. Cone-shells. Estimated 

 number of species : recent, 400 ; British, ; fossil, 80. 

 Cretaceous, &c. 



IT Examples of Conus and Dibaphus, including 

 C. omaicus, C. cedo-nidli, C. nobilis, C. aurisi- 

 acus, C. orbignyi, and others, illustrating the 

 generic and sub-generic forms of this highly 

 valued family. 



