WORMS. TESTACEA. 62. Venus. 223 
Shell thick convex quite fmooth, fometimes white fometimes 
brown, with or without rays; within white, 
Leta. Tumid, quite fmooth radiate with white, lips ofthe an- 
terior flope fubviolet. 
Gualt. Test, tab. 88. fig. V. 
Knorr. Vergn, 4. tab. 24. sig. 2 and 6. 1, 10. f. 5. 
Schrat. Einl. conch. 3. tab, 8. fig. 7. 
Inhabits the Mediterranean and Indian Seas; about 1 = inch long 
and 1 2 broad: /he//glofly yellowifh with white blueifh or. 
brownifh rays: anterior flope oblong, pointed below, imprefled, 
glabrous, varied with white and blue; impreflion behind the 
beaks {lightly heart-fhaped and white. 
Castren/is» Shell triangular rounded, gibbous, quite {mooth and marked 
with angular characters. 
Lifter conch. tab, 257, 258, 259, 262, 287. 
Bonan. recr. 3. fig. 376, 378. Muf. Kircb. 2. f. 311, 512» 
Rumpf. Amb. tab. 42 k. Gualt. Tefl. tab. 82. H. 
Valent. Ath. tab. Vg. fig. 16. Argenv. conch. tab. 21, Me 
Lefer teftaceoth. fig. 108, 109. 
Knorr Vergn. 1. tab. 28. fig, 2, 2. t. 10, f. 2, 3. te 4. f, 4 and 6, 
tab. 6. fig. 5, 6. 
Chemn. conch, 6. tab. 35. fig. 367—381. 
Regenf. conch. 1, tab. 1. figo 3y 4. t. 4. f. Ale 
Inhabits the Indian Ovean and Red Sea: 1 7 inch long and nearly 
2 broad: white with brown chefnut and pale yellow lines 
forming triangles, and marked with tranfverfe very fine arched 
ftriz : margin very entire. 
Phry. — Shell fmooth, tranfverfely ftriate before and behind: pofte- 
rior flope obcordate with violet veins. 
Inhabits the Southern Ocean. 
Merce. Shell ovate compreffed, tranfverfely ftriate, with a gaping 
‘future behind. 
Lifler conch. tab. 378. Argenv. Zoom. tab. 12 B: 
Knorr Vergn. 6. tab. 7. fig. 2,4, 6,5, 6. : 
Chemn. conch. 6, tab. 43. fig. 450—454° 
Inhabits the American and Indian Ocean; 1 inch long, 2 } broad: 
Pell white with blueifh brown or rofy angular lines or fpots, 
or violet, or marked with alternate blue and flame-colour 
bands; within white with traníverfe frie: beaks diftant : 
anterior flope cut: margin denticulate. 
Ménuta, Shell fubovate tranfverfely ftriate and fubpellucid; the 
membranes clofed. 
O. Fabr, fn. Gran; p. 412. 1, 412. 
; Inhabits 
