220 WORMS. TESTACEA. 6a. Venus. 



Cafina. Shell with tranfverfe recurved acute grooves; the poflerioi 

 margin crenulate, and grooved behind the beaks. 



Li/ter conch, tab. 2%6. fig. 123, 



Chemn. conch. 6. tab. 29. jig. 301, 302 ? 



Schrcet. Einl. in conch. 3. tab. S.fig. 6. 



Inhabits European Seas, and is often found in a foffile ftate.« 



Shell white with brown fpqts ftriae and marks; depreilion behind 

 the beaks brown ; beaks reddifh. 



Cancellata. Shell with tranfverfe membranaceous remote ftrise and a 

 : - heart-fhaped depreilion behind the beaks. 

 Knorr Vergn. 6. tab. 39. fig. 4. 



Chemn. conch. 6. tab. l$.f!g 4 137. t. 29./. 304 — 307. 

 Inhabits the Indian Ocean; above an inch long and if broad; 

 cinereous with obfeure brown rays, within red or brownifh* 

 fometimes furrowed with longitudinal ftris : margin crenulate! 



• Qallina. Shell radiate, with tranfverfe obtufe fliix: hind tooth of 

 the hinge very minute: margin crenulate. 

 Lister, tab. 281, 282, 295. Brit. Zool. iv. tab $b.ftg. 50. 

 Klein ostr. tab. 10. jig. 54. Bytem. app. t. 11. f. 39. C? 

 Knorr Vergn- 5. tab. 14. fig. 2 — 5.' 

 Born Muf. Ccef. Vind. tejt. p. 57. iKgn. fig. b. 

 Chemn. conch ,6. tab. $o.jig. 308, 310. 



2. Lifter conch, tab. 2g$. fig. 132? 



Inhabits American and European Seas; an inch long and l| broad; 



thick flatum very fmooth, varying in colour, with ufually 



about 3 brownifh or reddifh rays, and a few angular lines; 



depreffion behind the beaks brown heart-fhaped; the anterior 



3lope with brown lines and fpots. 



Ouineenlis. Shell cinereous, within fnowy, -with tranfverfe acute itria?| 

 anterior margins white, the lips finely ftriate and rofyl 

 margin very entire. 



Chemn. conch. Q>. tab. 30. jig. 311. 



Born. Muf. C<ef. Vind. tejt. tab. 4,.. fig. 8, , 



2. Chemn. conch. 6. tab. 3$. fig. 312, ■ -/ I 7 ' J ® 

 Inhabits fhores of Afka y refembles the laft. 

 Shell mixed here and there with pale reddifh ; the fhi<e elevated 



and ftrong but not branched : depreilion behind the beak$ 



heart-fhaped. 



Petulca. Shell flightly grooved, the margin crenulate : anterior mar- 

 gin with a fubovate gape, the membranes acute. 

 Inhabits Southern Europe; fize of an hazel nut: clouded with 

 white and brown: depreilion behind the beaks oblong. 



Fh 





