UNIVALVES—— BULLA. 101 
Division I1.— Shell oblong, beaked at the ends. 
Sczentific Name. Locality. Common Name. 
Volva --+.--+-++ Japan, China ---+++++ - Weaver's shuttle 
Lepida-+---+--+> Africa, Leghorn--++-+--+ Orange:--+ do -- 
Birostris --+-+-+-- Java, China --+----++---- Lesser ---- do - 
Secale +--+ -+++- American Seas, Jamaica Rye shap’d do -- 
Spelta ->+--++--+- Mediterranean----+-+++-- Oblong ---+ do -+ 
Gibbosa -~.--»~-- Brazils «c-ccece-cvecvces Belted ---- do «+ 
Division III.—Shell thin, gibbous, and aperture large. 
Famity 1.—Apex generally umbilicated and without a spire. 
Naucum ---+-+-- Amboyna, Africa, Asia-- Seanut --- do-- 
Aperta «+-+++++> Cape of G. Hope, Britain Wide ----- do -- 
@atena’ < </ssielsitele DevonsShireric ci. acsisleeles Chain :~<:- 2 do -- 
Plumula---+-+-- IDitgtspounoopooD moun dam Feather --- do -- 
Hydatis -----+-- Mediterranean, Britain -- Paper ----- do -- 
Ampulla-------- Amboyna, East Indies -- Pewet's-egg do - 
Amygdalus:--+-- West Indies, Niger------ Almond--- do -- 
Lignaria --++---- Adriatic, Britain ----++-- Brown striated do 
Pectinata ------- Denmark -«---++s--00+- Pectinated - do -- 
Soluitarsetetesiescts « Ceylon a aveiatets evoteteletanetetate Unsealed -- do -- 
Akera -+-+-++s0-+ Norway, Britain ---+---- Elastic ---- do 
Cylindrica --- ++ South Seas--+---+«- 
Shells Minute. 
-++  Cylindric - do - 
Cylindracea --+- Britain -++++++++ eeeeee CyKndrical do -- 
Umbilicata ---.. Ditto «-.+-++--- ee eeeees Umbilicated do -- 
Retain cess ses Ditto ----- d/o sieieiole) este! * sie Blunt * --.. do'-~ 
OM Nie, Ghtos046er IDV SGoGgcbonsaasoe soos Obtuse --- do -- 
Faminy 2.—Having a spire. 
Physis ---+-+.++- East Indies, South Seas -- Striped --- do -- 
Amplustre ----+- China, Moluccas-----. ++ Banded.---- do -- 
