WORMS. TESTACEA. 62. Venus. 
239 
M, 
'-ctta, 
‘^tar. 
’‘’’tens. 
bi 
'opha. 
-‘vi-a. 
ih, 
'urns 
Shell lentiform, with cancellateftrix and radiate ; the mar- 
gin crenulate t greenifh with darker fpots. 
Inhabits " — Argewv. Zoomorfh. tab. 
Shell white with radiate fpots and arched (Iria;, in the mid- 
dle a large grey fpot tapering upwards. 
Inhabits Argenv. Zaomorph. tab. iz-f’g- 
Shell entirely flelh-colour, with longitudinal nbs eroding 
the rather remote tranfverfe wrinkles. 
Inhabits KnorrZergn. 4. tab. T,.ftg. 3-. 
Shell I I inch long and i ^ broad; 
Shell thin, a little conve?c, with fine tranfverfe ftrite : within 
fnowy, without marked with the letter W and many 
fcattered dots: beaks inflefted- 
Inhabits^ Regenf. conch, i. tab, 12. 
Shell tumid folid fmooth, with a few tranfverfe wrinkles 
towards the margin. 
Inhabits Africa. Adant,feneg. \ .tab. 7. 
5/W/ covered with a dirty white Ikin, 1 i inch long and above 2 
broad ; hinge with 4 teeth in each valve. 
Shell thin orbicular pellucid quite fmooth fnowy: hinge 
with 2 teeth in each valve. . 
Inhabits Africa, Adam Jeneg. i. tab. ib-Jig. ». 
Shell about an inch and a half in diameter. 
Shell fuborbiciilar compreffed hard tranfverfely grooved, 
reddilh with brown rays, within violet. 
'■'..a. 4 i 
of this Genus, 
Shell orbicular compreffed fnowy, with longitudinal rounded 
grooves croffed by tranfverfe ftria;. 
Adans feneg. i. tab, iS-yfg- 3 * , , . in • 
Inhabits Africa: about 9 lines m diameter: grooves 26—30. 
hinge with very fliort teeth. 
Shell tranfparcnt, pale fulvous within and without, with 
very fine longitudinal grooves. 
Inhabits Africa. Adans feneg. i,tah. t'&.fg. 4 * 
About 16 lines long and not fo much broad, ^ 
Difeors. 
