220 WORMS. TESTACEA. 6 a. Venus. 
Caftna. Shell with tranfverfe recurved acute E;rooves; the 
margin crenulate, and grooved behind the beaks. 
Lifter conch, tab, 123. 
Chemn. coach. 6. tab. 2q. jig. 30 !, 302 ? 
Schrast. Einl. in concha 3. lah. 2. fig. 6. 
Inhabits Seas, and is often found in a foflile ftatf.' 1 
Si'e// white with brown Ipots ftriae and marks; depreffion bek'"" 
the beaks brown ; beaks reddifli, 
Caacellata. Shell with tranfverfe membranaceous remote ftrix anti » 
heart-fliaped deprellion behind the beaks, 
Knorr Vergn. 6. tab. 39. //]§■. 4. 
Ckema. conch. 6. tab. . 3, fg, , 37, 35. y; 304-307. , , 
Inhabits the Indian Ocean-, above an inch long and It brO\. 
cinereous with obfeure brown rays, within red orbroivni**'’ 
lometimes furrowed with longitudinal ftrix : margin crenul^'^' 
' Ga//ina. Sliell radiate, with tranfverfe obtiife flrire : hind tooth 
the hinge very minute: margin crenulate. 
j-ister. tab. 281, 282, 29;. Brit. ZooL iv. tab cb.fig. to. 
IGein cstr, tab. lO. jig. 54. Bjunt. app. t. 1 1. f, 39. C ! 
Knorr Vergn J. tc^. l/^.fig. 2—5. 
Born Muf. Ccef. Vtnd, te/t. p. 57. -vign. fg. b, 
Lhemn. conch, b. tab. lO.fg, 308, 31P. 
Z- Li/ier conch, tab. fg. 132? 
Inhabits and European Seas-, an inch long and if b^j 
thick llattilli very finooih, varying in colour, with 1. 
about 3 brownifli or reddiih rays, and a few angular lif'fl 
depreffion behind the beaks brown hcart-lhapcd ; the anie^^’ 
lope with brown lines and fpots. 
QuineenEs. Shell cinereous, within fnowy, with tranfverfe acute flfif i 
anterior margins white, the lips finely ftriate and roO' 
margin very entire. 
Chemn. conch. 6. tab. $0.fg. 311. 
Born Muf. Caf. Find, left, tab ^.fg. 8, 
2. Chemn. conch. 6. tab. 34, fig. 3J2. j 
Inhabits fliores ot Africa, refembles the lall. . 
mixed here and there with pale reddiih ; the fliia; ek^atf® , 
?nd llrong but not branched ; depreffion behind the I 
heart- fliaped, ' • ' 
Eetu/ca. Shell nightly grooved, the margin crenulate : anterior 
gin with a fubovate gape, the membranes acute. 
Inhabits Southern Europe-, fize of an hazel nut : clouded 
White and brown : depreffion behind the beaks oblong. 
