WORMS. TESTACEA. 59. Cardiiim. 
201 
Vhemn, conch. 6. tab. l6, jfj". 162— 164. 
2. Schrcet. Einl.in ccnch. 2, tab, ll. 
Chemn. conch. 6. tab. l6, fig. 165 ? 
Inhabits European and Ametican leas ; refembles C. hemicardium. 
Shell mark.ed with, chelnut or brovvn fpots ; ribs numerous, the 
interniediatq grooves fmooth; valves on one lide a little trun- 
cate, but prominent in the middle: binge with a fingle pri- 
mary toothrf 
atum Shell fomew’ha't heart-ftiaped ; the ribs Ii'igli and grooved 
down the middle, and befet with large hollowed Ipiaes 
, near the circumference. 
Dono’vans Britifi Shells, i. tab. 6. 
Pennant Brit. Zool. iv. tabi 50./. 37.' 
Lijler conch, tab. 321, Barbut, tab. Jig. 10. 
Argen-ville conch, tab. 20,, B. Gualt.teft. tab.jz. A. 
Bonan. recr. 2. fig 96, 97. Muj. Kirch. 2. Jg,^S> 97 ’ 9 ®- 
Seba Muf 3. tab. 86. fig- 4. 
Murr. fund, tefiac- tab. 2, fig. 9. 
Chsnm. conch, (s. tab. 13,/! IJJ — 157. 
2. Seba Muf. 3. tab. 86, y^. 5. 
3> Seba Muf. 3. tab. ^6, fig. 8. 
4- Born Muf. Ccef. Vind. teft. tab. 2, f. 5» 
5- Bonan. Muf, Kirch. 2. fig. 94. 
Inhabits European and Mediterranean feas ; refembles C. echina- 
tum, but is longer, more convex and a little truncate on one 
fide, but elevated towards the margin, with 2 ribs: yellowilll- 
brown with fomctiines darker bands ; hinge with 2 teeth in 
each valve, lateral ones 2 in ohe ValVe and 3 in the other. 
Sliell iiightly hcart-lhaped, with carinate fpinous ribs. 
Penn. Brit. Zool. iv./. 90, n. 38. 
Lifer conch, tab. 324. An. Aag. tab. 5, fig. 53. 
Mull. Zool. Dan. l. tab ^3. fig. I, 2. t. 14, f. 1 — 4, 
Bonan. recr. 2. f.c^O. Muf. Kirch. 2. f. 'SS. 
Guttlt. Teji. tab. 72. f. B. Chin oftr. tab. lOjy. 40. 
Da cofta Brit, conch, tab. f, 2. 
Seba Muf. 3. tab. 86. fg. 3. 
Murr. teftac. tabs 2, fig. 19. 
Lejk. Naturg. I . tab. I'o, Eg. 8. 
Chemn. conch, 6. tab. 13. fg, 158. 
2. Seba Muf. 3. tab. 86. fig. 13. 
3 - Bonan. recr, 2. fig. 72. Muf. Kirch. 2, f. 71. 
Inhabits European Seas: white or tawny with White bands; 
fmaller than the laid and more rounded : the grooves deep, 
about 18, and wrinkled near the hinge: the prickles grow- 
ing larger from the middle towards the eircBCiference,' and 
none near the hinge, 
VOL. IV,— C c ^Ciliare 
