WORMS. TESTACEA. 62. Venus. 223 
Flammea. - Shell tranfverfely ftriate, the back glabrous: anterior flope 
very broad with brown lines: iimpreílion behind the 
beaks heart-fhaped with brown lines. 
Schrat. Einl. Conch. 3. 5. 200. tab. 8 fig. 12. 
2. With 3 brown rays. Schret. conch. p. 200. 1. 146; 
Inhabits the Red Sea, refembles the lait, but the knob is blucifh 
and the fhell is white with cinercous lines fpots and. marks, 
Cerbicdla. Shell triangular fmooth truncate each fide with yellowifh 
rays: flope heart-fhaped: margin very entire. 
Knorr Vergn. S. tab. 15. fig. 2 and 6, £, 10. f. 5. 
Chemn. conch. ©. tab. 31. fig. 326. 
Inhabits the <Arlantic and American Seas: anterior flope pale 
cheínut with a large gape. 
* Sinuwofa. Shell fomewhat triangular thin convex, with a deep obtufe 
indentation in the middle of the front. 
Donovan's Britifo Shells. it. tab. 42. fig. 2. 
Pennant Brit. Zool. iv. tab. 55. fig. 51. A. 
Found at Weymouth, 
Hermad- Shell triangular, quite fmooth, olivaceous obfcurely banced; 
phrodita. within white or blueith: anterior flope heart-fhaped, 
potterior ovate. 
Martin. 1. Manigf. 1. tab. I. fig, I. 2, 
Chemn. conch, 6. tab. 31. fig. 327--329. 
Inhabits rivers of Guizea 3 very rare. 
Shell thick coarfe, with convergent beaks, and crenate teeth in 
the hinge. 
Corwaxs. Shell green, within white, with tranfverfe unequal mem- 
branaceous ftriz: margin acute. 
Pumpf. Mif. tab. 42. fig, H. 
Chemn, conch, 6. tab. 32. ig. 236. 
Inhabits rivers of Ceylon: 21 inches long and 3 broad; with an 
oblong gape on the anterior flope: 2 of the hinge-teeth clelt. . 
Cafia. Shell gibbous fnowy, the anterior part convex and with the 
infide pale violet; anterior flope roundifh, pofterior 
heart-fhaped: margin very entire. ' 
Chem, conch, 6. tab. 53. fig. 346. 
Inhabits Jndia: on the anterior flope is a large oblong gape: 
anterior tooth of the hinge in each valve crenulate. 
fais, Shell thin glabrous convex, white varied with brown pofte- 
rior flope elongated, with oblique tumid lips: hiage 
with 4 teeth. 
Ffa Gualt. 
