* Exoflcta. 
* Undata:. 
Tumidula. 
Sznenjis. 
Sinuata. 
* Porealis. 
WORMS. TESTACEA. 62. Venus. 233 
Shell lentiform, tranfverfely ftriate; pale with obfolete 
rays; poíterior {lope heart-fhaped, 
Donovan's Brit Shells. ii. tab. 42. fig. 1. 
Pennant Brit. Zool. iv. tab. 56. fig. 49. 
Da Cofta Brit. Conch, tab. 12. fig. 5. 
Lister. tab. 202. fig. 128.1. 297. f. 1345 
Gualt, test, tab, 75$. F, Adans. fen. 1. tab. 16. fig. 4. 
Born Muf. Czf. Vind. teft; tab. 5. fig. Oe 
Chemn. conch. 7. tab. 38, fig. 402—404. 
2. With a few longitudinal yellowifh lines. 
Brits Zool. iv, tabs $4. jigs 49. As, Lister. tab. 295. 
Chemn. conch. 7. tab. 38. fig. 4006. T ; 
Inhabits Nar«vay and Briti/b Coasts: about 2 inches long and as 
much broad; refembles V. proftratà; but is more convex and 
the lips are not rough: Zea&; incurved: within covered with 
- à thick whitifl creft: poftérior impreffion ferruginous. 
Shell thin convex orbicular, whitifh tinged with yellow ; 
with thin tranfverfe ftri : margins waved. 
Pennant Brit, Zool iv. tab. $5. fig. 51. 
Inhabits Britijle Seas; fize of a hazel nut. 
Shell gibbous, with tranfverfe remote rather obfolete 
grooves. ' 
Inhabits 
Mant. 2. 5. 546: margin very entire. 
Shell longitudinally ftriate, with tranfverfe white and vi. 
olet arches. 
Chemn conch, 10. tab. 171. fig. 16636 . 
Inhabits the CZaefe Sores. 
Shell lentiform, ttanfverfely ftriate; with an oblong gaping 
fent on the anterior flope: hinge with 4 teeth. 
Lifter conch. tab. 294. fig, 130. 
Chemn. conch. 7. tab. 38. fig. 400, 401. 
2. With a few paler bands. . 
Lifter conch. tab: 290. fig. 126. 
3. Like var, 2; but fmaller: 
3 
Lifter conc, tad. 289. fiz, 25. 
Gzalt,.test. tab. 75. sig. N. 
Chemn. conch, 7. tab. 38. fig. 3. 1 
Inhabits Nicobar Iflands; refemblés V, exoleta, but is le(s or- 
bicular, more convex, and the ftriz are more elevated, 
Shell lentiform, with very remote tranfyerfe membrana- 
ceous ftric. 
VOL. IV.—G g Brit. 
