WO&MS. TESTACEA. 59. Cardium. 20 1 



Cbemn. conch. 6. ta£. i6, fg. 1 62 — 1 64. 

 2. Schrtzt. Einl. in conch. 2, tab* J, Jig. II* 



Chemn. conch. 6. /#£. 16, /?£•, 165 ? 



Inhabits European and Ameiican feas : refemblcs C. hemicardium. 



££*// marked with chefnut or brown fpots ; ribs numerous, the 

 intermediate grooves fmooth : valves on one fide a little trun- 

 cate, but prominent in the middle: hinge with a fmgle pri- 

 mary tooth; 



^Aiuhatum Shell fomewhat heart-fhaped ; the ribs high and grooved 

 down the middle, and befet with large hollowed fpines 

 near the circumference. 



Donovan's Britifh Shells i i. tab. 6i 



Pennant Brit. Zool. iv. tab.^o.f. 37. 



Lifter conch, tab. 321, Bar but t tab. 3, Jg*. io, 



Argewville conch, tab. 23, B. Gualt.teft.tab.j2. A. 



Bonan recr. 2. fig. 96, 97. MuJ. Kirch. 2. ,/g". 95> 97> 9?. 



&?£« M//* 3. ta5. 86. jig- A* 



Murr.fund.tefac tab. 2 } fig 9. 



Cbemn.conch. 6. tab. 15,/"- 155 — 157. . 



2. Seba Muf. 3. #«£ 86,7%-. 5. 



3. &>&* Ma/. 3. tab. 8b; fig. 8. 



4. Born Muf Ccef. Vind. teji. tab. 2, f. 5. 



5. Bonan. MuJ. Kirch. 2. Jig. 94. 



Inhabits European and Mediterranean fea9 • re'fe rubles C. echina- 

 tum, but Is longer, more convex and a littie truncate on one 

 fide, but elevated towards the margin, with 2 ribs: yellowiih- 

 brown with fometimes darker bands : hinge with 2 teeth in 

 each valve, lateral ones 2 in one valve and 3 in the other. 



Shell (lightly heart-fhaped, with carinate fpinous ribs, 

 Penn. Brit. Zool. iv p. 90, n. 38. 

 Lifer conch, tab. 324. Anr Ang. tab 5, fig. 53. 

 M»//. ZW. 2>#tf. I. tab 13, fg, 1,2. /. »4>y^ I — 4? 

 Bonan. recr. 2.f.go. Muf. Kirch. 2. f. 88. 

 Gualt. Left. tab. 72. /IB, ^«a o/rr. ta£. \Q,f. 40, 

 i)« c«/?<z i?r/V. conch, tab. 14,/. 2. 

 »^a Ak//;. 3. fea&. 86. _/?£. 3. 

 Murr.tcj'tac. tab. 2. fg. 19. 

 JU/£. Naturg. 1. ft& 10, %. 8« 

 Cbemn. conch. 6. /#£. £5. /;£. 158. 



2. Seba Muf. 3. ta£. 86. jig. 13. 



3; Bonan. recr. 2. Jig. 72. Muf. Kirch. 2, f ~/l + 



Inhabits European Seas: white or tawny with white bands; 

 v fmaller than the laft and more rounded : the grooves deep, 

 vv about 18, and wrinkled near the hinge: the prickles grow* 

 in^ ; larger from the middle towards the circumference, and 

 fjojit: near the hinge, 



VOL. IV,— C c *Ciliare 



