WORMS. TESTACEA. 59. Cardium. 
199 
She]] virhite tranfverfely ftrlate, orbicular, angular on the 
fore-part: hinge without lateral teeth, the primary one 
projcfting doubled, in one valve a. 
Inhabits Chemn. cone. to. tab, I'jo.fig. 1651 — 1653. 
.59. CARDIUM.' Animal a Tethj’s: JJielL 
bivalve, nearly equilateral, cquivalve, ge- 
nerally convex, longitudinally ribbed 
ftriate or grooved, with a toothed margin; 
hinge with 2 teetii near the beak, and a 
larger remote lateral one each lide, each 
locking into the oppofite. Cockle* 
Shell gibbous cquivalve, with elevate carinate concave 
membranaceous ribs. 
Barbut's Shells, tab, y fig. /• Major. teji,tab. lO. 
Argenoj. Conch, tab. 26. A. Gvalt. ted. tab. 'jz. D. 
Acian/on Seneg, tab. \%.fig. z. 
Lid Conch, tab. 327. Rutr.pf. Muf. tab, t^^.fig, 6- 
Column, purp, 26. tab, 27. Knorr. Vtrgn. 1. tab, Z^.fig. 22. 
Chemn, cone, 6. tab. 15. /jr- J6 i. 
Inhabits the African Ocean : 3 inches long, 3 i broad, and above 
3 high : whitifh with broad brown grooves. 
Shell heart-fhaped, the valves comprefled and carinate with 
teeth : beaks approximate. 
Barbut. tab, fg. Gualt, ted. tab. 84. fig, B, C, D. 
Lifler Conch, tab, 318. 319. Knorr. Vergn, i- tab, zZ.fig.z, 
Rump/, MuJ. tab. 42. E. Kieiir of.n tab. 10. fig. 39. 
Argewv, Conch, tab, 26. I. Zoomorph. tab. 12. K. 
Bonatin. recr. 2. r/g-. 49. Muf. kirch. 2. fig. 48. 
Knorr Vergn. l.tflb, 1%. fig. 3./. 11.^. I . 
Born Mnf. Caf. Find. tejl. tab, 2, fig. 13;— 18. 
Chemn. cone. 6 . tab. \^. jig. 143 — *4^. 
2. Lister Conch, tab. ^zo. fig. 137. 
Inhabits the Indian Ocean'. 2 \ incites long, and above 2 broad ; 
refembles the human heart: the ribs are placed obliquely, 
and before the beaks is a heart-fhaped depreffure or gape : 
generally whitifh with fometimes a few red fpots ; fometiines 
flat on each fide, fometimes concave on one fide. 
Shell heart-fhaped ; the fore-part furrowed with lines, the 
hind-part with broader ltlr£, forming by their con*. 
junftion the figure of a heart : one part convex, the 
other concave. 
A.tgtn%\ 
