BIVALVES ——CARDIUM. ol 
Famiy 2.—Ribs armed with nodules, elevated rough stric, wrinkles 
or scales. 
Scientific Name. Locality. Common Name. 
Edule « «e005, Britain «+ ++++essere eres Common Cockle - 
Unedo fei ssswiawe India «+++ +eesseeereeres Strawberry Heart 
Fragum ---+ eee. DEO oo cis ins sieesyesie's -« White strawberry 
Hemicardium-+:+ Ditto-+++-+ssseseeeree: Heart shaped C -- 
Tuberculatum --- Mediterranean --++- +--+: Tuberculated do - 
Tsocardia ---- +++. East & West Indies --+-- Imbricated do -- 
Pettiniforme -+-: cccsecescecus sivvale} siseleliere Pecten ---+ do -- 
Regulare --++++-- West Indies!ss ++ 0.<+-00« Regular --- do -- 
Glaucum -+--+-+ Mediterranean -++-++--- Chamelion do -- 
Fasciatum -+---- Britain -++-+ -+++e+e+- Banded---- do -- 
Elongatum- ---- Ditto-+---++++ -++resees Peienet do - 
Leucostomum:--+ West Indies ----- teeeeee White mouth’d C. 
Magnum eiaial ial ciei) | ciel elelleiel=)sl-elfelelsialefcislele se Great:--.>- do - 
Rigidum Erotduterctatet | cleverataiptereicielaisjele cfelelctsiis(e(stts Rigid -- va IC ONer 
Maculatum --.-- Ceylon sistelelt slai@eicie: sielel nyo Spotted: sree Oiiel= 
Flavum.«---..... Ceylon srafefacalavcronetereron metas Wellow-- +>) do «- 
Spinosum ------- Mediterranean -- ------- Spined ---- do - 
Echinatum :---- Ditto, Britain-------- +» Thorny --+ do-- 
| Fine 6Seg0GoouoOC Bast Indies: e«e oe cicls oe ASIate. ++ GO) 
Muricatum ------ West Indies ---+--++--- » Prickly ---- do -- 
Rugatum -. -- -- East & West Indies ---- Gaper----- do -- 
Latum «+--+... East Indies ------.--«.. Broad ---- do-- 
Ciliatum ------.. Greenland ------+--++ - Fringed --- do -- 
Marigeimiivoogooo lbtatern cocoqnuceDooCD aC Spinous- 50 G(ne0S 
Muricatulum ---- Coast of Kent ----..-+--- Minute -- do-- 
Famity 4.—With ribs unarmed. 
Costatum -:--- SN) AP Ca: osias er tlorieree ale of -- Highribbeddo -- 
Medium ----++++ West Indies, Britain ---- Marbled-- do -- 
Donaciforme ---- West Indies --+++++-+++- Triangular - do -- 
Exiguum ceeeeee Britain ee eee ee eesereee Pigmy -++->+ do oe 
