32 BIVALVES.— CARDIUM. 
Scientific Name. Locality. Common Name. 
Ringens ejelohahelsieie Africa «+++++=+- doconaoed Gaper Cockle - 
Oblongum :--++. Mediterranean ----+-+-+- Oblong:--+ do -- 
Papyraceum --<- Indian ocean & Mediter. Paper:----- do -- 
liniloysainiyin GOO UD. sad Odeo 5000cG CooDGbSS Furbelowed do -- 
Rusticum ---+++> Mediterranean --------- Banded---+ do -- 
Islandicum ------ Greenland ------+ eeee-> Teeland---- do -- 
* Parvum ----- - Coast of Hampshire ---- Diminutive do -- 
Drviston L{l.—Sub-cordate, obsoletely ribbed, striated or smooth. 
Famity 1.—Obsoletely ribbed. 
Levigatum ----- Britain, Mediterranean -- Smooth Cockle-- 
Famity 2.—Lightly striated, approaching smooth. 
(LLineatum--.---- East Indies: --+-..------ Streaked Cockle 
Serratum «------ W. Indies, Mediterranean Citron:---- do -- 
Greenlandicum -- Greenland seas ----++-- Greenland: do -- 
FRolicum «++. +++ Africa coesssceree eeeee Janus --«-« Gow 
Rubrum «-++++-- Bividainnios saeleteto wera otere en btetet Redicsits |: do -. 
