52 



BIVALVES. — VENUS. 



Nebulosa — Clouded. 

 E xilis — Abandoned. 

 Recens — Recent. 

 Japonica — Japanese. 

 StrmtSi— Striated. 

 Castrensis — Camp. 

 Pectunculus — Painted. 

 Lorenziana — Lorenzo. 

 Ornata — Adorned. 

 Phryne — Phryne. 

 Meroe — Meroe. 



Callipyga — Arabian. 

 *Deflorata — Purple-streaked. 

 Fimbriata — Fringed. 

 Reticulata — Netted. 

 Puerpera — Spotted. 

 Crenulata — Cremdated. 

 Radiata — Rayed. 

 Cincta — Girdled. 

 Squamosa — Scaly. 

 Lapicida — Rock. 

 Di vergens — Ziczac. 

 Plumbea — Leaden. 



Division III. — Suborbicular. 



♦Tigrina — Tiger. 

 Sinensis — Chinese. 

 Prostrata — Compressed. 

 Punctata — Punctured. 

 E xcisa — Defaced. 

 *Exoleta — Antiquated. 

 Concentrica — Concentric. 

 Juvenis — Young. 

 Histrio — Party coloured. 

 *Undata — Waved. 



Scripta- 



Tumidula — Gibbous. 

 *Borealis — Northern. 

 Aculeata — Acute-ribbed. 

 Pectlnata — Pectinated. 

 Discors — Toothed. 

 Dispar — Unequal. 

 Equivoca — Equivocal. 

 Divaricata — Divaricated. 

 Contraria — Contrary. 

 Corrugata — Corrugated. 

 Written. 



Division IV. — Shells inflected, with a longitudinal 



FURROW on the ANTERIOR END. 



Pensylvanica — Pensylvanian. Jamaicensis — Jamaica. 

 Edentula — Toothless. *Spuria — Spurious. 



Globosa — Globose. 



Division V. — Shells suboval, and slightly angulated 

 on the anterior side. 



Family 1. — Smooth or striated. 



Gigantea — Gigantic. 

 Literata — Lettered. 



Geographica — Geographic. 

 Rotundata — Rounded. 



