UNIVALVES — BULLA. 101 



Divisiox 11. — Shell ohlony, beaked at the ends. 



Scientific Name. Locality/, Common Name. 



Volva Japan, China - Weaver's shuttle 



Lepida Africa, Leghorn Orange do •• 



Birostris Java, China Lesser • • • • do • 



Secale American Seas, Jamaica l?ye shap'd do •• 



Spelta • ' Mediterranean Oblong do • • 



<3ibbosa • • Brazils Belted • • • • do • • 



Division III,— Shell thin, gibbous, and aperture large. 



Family 1. — Apex generally umbilicated and without a spire. 



Naucum - • • Amboyna, Africa, Asia • • Sea nut • • • do 



Aperta Cape of G. Hope, Britain Wide do 



Catena Devonshire Chain do 



Plumula Ditto Feather • • • do 



Hj'datis Mediterranean, Britain • • Paper do 



Ampulla Amboyna, East Indies • • Pewet's-cgg do 



Amy gdalus West Indies, Niger Almond • • • do 



Lignaria Adriatic, Britain Brown striated do 



Pectinata Denmark • Pectinated • do 



Soluta Ceylon Unsealed • • do 



Akera Norway, Britain Elastic • • • • do 



Cy liiuirica • = . • • South Seas Cylindric • do 



Shells Minute. 



Cylindracea • • • • Britain Cylindrical do 



Umbilicata Ditto Umbilicated do 



Retusa Ditto Blunt • • • • do 



Obtusa Ditto .o Obtuse •••do 



Family 2. — Having a spire. 



Physis East Indies, South Seas • • Striped • • • do 



Amplustre China, Moluccas Banded do 



