220 WORMS. TESTACEA, 62. Venus. 
Cafina. Shell with tranfverfe recurved acute grooves; the pofterior. 
margin crenulate, and grooved bchind the beaks. 
Lifler concb. tab. 286. fig. 123. 
Chemn. contb: 6, tab. 29. sig. 301, 302? 
Schrat. Einl in conch. 3. tab. 8. fig. 6. 
Inhabits European Seas, and is often found in a foffile ftatez. 
Shell white with brown {pots ftrize and marks; depreflion behind 
the beaks brown ; ; beaks redaifh. 
Cancellata. Shell with tranfverfe membranaceous remote ftrie and a 
heart-fhaped depreffion behind the beaks, 
Knorr Vergn. 6. tab. 39: fig. 4.° 
Chemn. conch. 6. tab. 13, fig. 137. t. 29. f. 504—307. 
Inhabits the /zdian’ Ocean; above an inch long and 12 broad: 
cinercous with obfeure brown rays, within red or brownifh ; 
fometimes furrowed with longitudinal ftriz : margin crenuláte; 
* Gallina. Shell radiate, with tranfverfe obtufe (trix: hind tooth of 
the hinge very minute: margih crenulate. 
Lister. tab, 281, 282, 295 Brit. Zool. iv. tab: $6. fig. $0. 
Klein ostr, tab. 10. fig. 54. Bytem. app. t, Y1, fi 39. C? 
Knorr Vergn. 5. tab. 14. fig. 2—5. 
Born Muf. Caef. Vind, teft» B. $7. vign. fig. b, 
Chemn. conch, 6. tab, 30. fig. 308, 310. 
2. Lifier conch. tab. 295. fg. 132! 
^ 1 nhabits American and European Seas; an inch long and 1% broad: 
thick flattith very {mooth, varying in colour, with ufually 
about 3 brownifh or reddifh rays, and a few angular lines: 
deprefion behind the beaks brown heart- thaped ; ; the anterior 
lope with brown Hugs and {pots, 
Guincentis Shell cinereous, within fnowy, with tranfverfe acute ftria : 
anterior margins white, the lips finely ftriate and rofy: 
margin very entire. 
Chemn. conch. 6. tab. 30. fig. 511 
Born. Muf. Caf. Vind, Ux tab. 4. fe. 8 
2, Chemn. conch. 6, tab. 34. fig. 312. 
Inhabits fhores of Africa, toin Nes the laft. 
Shell mixed here and there with pale reddifh ; the ftrie elevated 
and ftrong but not branched : depreflion behind the beaks 
heart-fhaped. 
4 
Petulca, Shell flightly grooved, the margin crenulate: anterior mar- 
Vcl gin Sero a fubovate gape, the membranes acute. 
Inhahits Southern Europe; fize of an hazel hut: clouded with 
white and brown: depreílion behind the beaks oblong. 
Flexyoja. 
e.¢ d 
RN 
