2§® WORIVtS. TEST ACE A. 59. Cardium.. 



Argen-v, Conch, tab. 23, D. Chemn. cone. tab. 14. fg % 147; 

 Inhabits Nicobar IJlands : rcfembles C. cardifTa. 

 Shell varied with white and rofe-Cobur, with a heart-fhape«i 

 gape before the beaks. 



Mttiffm, Shell heart-fhaped; the valves ftriate crenulate fubcarinate: 



behind the beaks a lunate heart-'lh'aped gip'e. 

 ♦ Born Muf. Cas. Find. test. tab. 3, fig. 1,2. 



Chemn. cone. 6 % tab. 14. Jig, 139 — 142. 



Inhabits India, Arabia and Egypt; a middle fpecieS between C,« 

 hemicardium and C. fragum: about 2 inches long and n.cara 

 as much broad ; thick, milk-white, anteriorly concave, cofl 

 vex behind, appearing as if truncate; the margift with plaited 

 teeth. 



Hmitar- Shell heart-fhaped, fubquadriteralV with carinate valves* 1 

 dium. beaks diftant. 



Barbut. tab. I. fig. 9. Rumpf. Muf. tab. 44. H. 



Petiv. Amb. tab. 17. f. 4. Gualt. test. tab. 83. C; 



Knorr. Vergn. 6. tab. ^-fig, 3. 7n*wf<t4*~ £. ^.£. 



Chemn. cone. 6. ta£. 16- fig, 159, 1 60. 



Inhabits the Indian Ocean; refemoles C cardifl*a # 



6/y// outfide ochraceous, within fnovvy : a few of the ribs glaw 



brous, the reft nodulous with the intermediate grooves wrinkled 



and marked with excavated dots. 



tAfheca^- Shell heart-fhaped, fubtrilateral, the valves tranfverfely 

 dfkfftt grooved, the fore-part longitudinally ftriate. 



Found hitherto in a foflile flate only : refcmbles the laft : valves 

 carinate on the fore-part, the ridges crenulate : beaks approx- 

 imate, with an ovate gape beneath them, the upper-part of 

 which is flattilh longitudinally crenulate ftriate with a higher 

 ridge. 



lAmatum, Shell heaic-fhaped, carinate, the fore-part obliquely trun- 

 cate, thin, quite fmooth, fnowy with gilt ftrise : mar- 

 gin denticulate. 



Kamm. lab. Rudolst.p 210. tab, 12. fig. 4, 



Inhabits Shell above an inch long. 



* Medium. Shell fomething heart-fhaped, fubangular; the valves an- 

 gular grooved fmooth. 

 Donovans Brit. Shells. Utah. 32. fig. 1; 

 Lister. Conch, tab. 316. Gualt, test. tah. 83. B<: 

 Bonan. recr. 2. fig. 94. Muf. ksich. 2. fig. 91 • 

 Knorr Vergn. 1. tab. 29. fig. 5, 6. /, !&,/. f. 



Spengkr Conch, tab. i.fig,k, 



Chemti 



