292 
eCikare, S 
Ciliatum. S 
Tuberculae S 
fum. j 
we t 
4 
5 
6 
Isocardia. 9 
WORMS. TESTACEA. 59. Cardium. 
hell flightly heart-fhaped, with triangular ribs befet along 
the ridges with thin fpines. 
Donovan's Britifh Shells, 1. tab. 32. f. 2. 
Penuani Brit. Zool. iv. tab. 50, f. 39. 
Barbut, tab. 5. f. v1. Lifter conch. tab. 325. 
Gnajt. tef, tab. 72. C. Knorr Vergn, t.5, f. 5. 
Chem, conch. 6. tab. V7. f. 171, 172. 
Inhabits Zuropean Seas, fize of a hazel nut, 
Shel] thin, brittle, whitifh, with about 18 ribs: the grooves 
tranfverfely wrinkled; the ribs triangular and fpinous. 
hell flightly heart-fhaped; with elevated fubtriangular ci- 
liate grooves | 
O. Fabr. sn: Greenl. $. 410, 1: 411, 
Inhabits North Seas, and very much .refembles the laft, but has 
232—538 rib. : frell thick, oblique, convex, 19 lines broad, 18 
long, under the curticle cinereous.or whitifh grey, within 
white; grooves with undulate ftriz ; ribs ciliate on the ridges, 
the middle ones a little convex, the lateral ones triangular. 
hell fomewhat heart-fhaped, with obtufe knotty tranf- 
verfely ftriate grooves. 
Lifter conch. tab. 329. Rumpf. Mnf. t. 48, f. 11. 
Bonan. recr. ct Muf. Kirch. 2. fig. 100. 
Gualt. Tefl. tab. 71. M.  Argenv. Zoom, tab. 6, C,D. 
Seba Muf. 3. tab 86, fig. 7 
Knorr. Vergn. 5. tab. 30, f. 2, and 6.448, foley 
Reoenf, conch. 1. tab. 8, fig. 235 24. 
Chemn. conch. 6. tab. 17, fig. 173» 
. Seba Muf. 3. tab, 86, fig. 2. 
. Seba Muf; 3. tab. 86, fig. 6. 
» Seba Muf, 3. tab. 86, fig. 14. 
. Knorr erga. 2, tab. 29, fig. 4o 
« Knorr Vergn. 3. tab, 4, fig. 5. 
Inhabits the Mediterranean: varioufly coloured and marked, ge- 
nerally brown with darker bands, or white with brown bands; 
very convex and traníverfely wrinkled, with about 20—23 
ribs, which are convex and {prinkied with a few knobs, 
hell heart-fhaped, with arched imbricate fcales along the 
grooves. 
Lifter, tab, 323. Rumpf. Muf. tab. 48, f. 9. 
Bonan. rer. 2. f.'95.. Mn. Kirch. f. 93+ 
Argenv. conch. tab. 23, M. | Olear. Gott. t, 29, f. 38 
Regenf. conch. t. tab. 5, fig. 56. 
Dorn, Muf. Caf. Vind. tell. p. 394 «ign. 
Clima 
