BIVALVES. VENUS. 51 



Almost all parts of the world supply specimens of this 

 genus. The American, African, Eastern, and Western 

 Oceans abound with them. The Mediterranean, Caspian, 

 and Southern Seas likewise produce various species ; as al- 

 so do the European and more northern oceans. 



VENUS Venus. 



DIVISION I. WITH THE ANTERIOR DEPRESSION SPINOUS. 

 Dione Prickly mouthed. Marica American. 



DIVISION II. SUBCORDATE. 



Paphia Paphian. 

 *Fasciata Banded. 

 Succincta Grooved. 

 *Cingenda GzVdferf. 

 Dysera Ribbed. 

 Tiara Turban. 

 Plicata Plaited. 

 *E xcavata Excavated. 



* Spinifera Spiny. 



* Verrucosa Warty. 

 Rigida Rigid. 



* C asina Broad- ribbed. 

 Cancellata Channeled. 

 Subcordata Subcordate. 

 *Minima Red streaked. 

 *S ulcata Furrowed. 

 *Montagui Montague's 

 *Scotica Scottish. 

 *Danmonia Devonshire. 

 Reflexa Reflected. 

 *Gallina Hen. 

 *Circinata Compass. 

 Caliste Dirty white. 



C ompressa Compressed. 

 Exalbida Whitish. 



Petulca Clouded. 

 *Granulata Grained. 

 *Ovata Oval. 

 Paupercula Despised. 

 Flexuosa Flexuous. 

 Mactroides Maclra. 

 Tripla Triple. 

 Triangularis Triangular. 

 Malabarica Malabar. 

 Flammea Brown- band. 

 E rycina Polished. 

 Costata Ribbed. 

 Pacifica South-sea. 

 * M er cenari a Money. 

 *Islandica Icelandic. 

 Coaxans Ceylon. 

 Lusoria Sportive. 

 *Chione Smooth brown. 

 Maculata Spotted. 

 Casta Chaste. 

 Meretrix Lipped. 

 Paradoxa Doubtful. 

 JLseta Globose. 

 Pinguis Sleek. 

 Triradiata Three-rayed. 



