78 



UNIVALVES. CYPR.EA, 



when arrived at maturity, the two hps on eadi side of their 

 mouths are always beset with strong articulate teeth. 



The greater proportion of the Cyprsea? are from the In- 

 dian ocean; many, however, come from the American, 

 African, and Mediterranean shores; some also from the 

 South seas. 



CYPRiEA.— Cown/ or Goivrie. 



A. With a manifest spire. 

 Exanthema {False Argus.) Livida. 

 Mappa {Map C.) Gibba. 



Arabica {Nutmeg C.) Turbinata. 



Argus {Ei/edC.) Venerea. 



Testudinaria {Tortoise-shell C.) Purpurescens. 



Stercoraria. 



Carneola (Cflrne/m?i C.) 



Zebra. 



Talpa {Burnt-month C.) 



Amethystea. 



Lurida. 



Venelli. 



Lota. 



Fragilis. 



Guttata. 



Cinerca. 



Plumbea. 



Oculata. 



Histrio {Harlequin C.) 



Aurantium {Orange C) 



Ferruginosa, 



Undulata. 



Aibida. 

 Rufescens 

 Translucens. 

 Punctulata. 

 Tigrina. 

 Dubia. 

 Trifasciata. 

 Conspurcata. 

 Bifasciata. 

 Cylindrica. 

 Teres. 

 Ovata. 

 Minuta. 

 Sanguinolenta. 

 Fasciata. 

 Regina. 



