WORMS. TESTACEA. 61. Venus. 



Virtxs, Shell lentiform, with eancellate ftri.ae and radiate ; the mar- 

 gin crenulate : greenifh with darker fpots. 

 Inhabits ■ A rgenv. Zoomorph. tab. $.fig. B. 



Maeukfa. Shell white with radiate fpots and arched Aria?, in the midr 

 die a large grey fpot tapering upwards. 

 Inhabits Argenv. Zoomorph. tab. 12. fig. G. 



Costata. Shell entirely nefh-colour, with longitudinal ribs croffing 

 the rather remote tranfverfe wrinkles. 



Inhabits KnorrVergn. 4. tab. 3. fig. p 



Shell 1 \ inch long and 1 J broad.; 



Wauaria. Shell thin, a little convex, with fine tranfverfe ft r'122; within 

 fnowy, without marked with the letter W and many 

 fcattered dots: beaks inflected., 

 inhabits - Regenf. conch. 1. tab. J. fig. 12. 



Tumexs, Shell tumid folid fmooth, with a few tranfverfe wrinkles 

 towards the margin. 

 Inhabits Africa, Adans > feneg. l.tab. 16 , fig. 7. 

 Shell covered with a dirty white ikin, 1 f inch long and above z 

 broad : hinge with 4 teeth in each valve.. 



Diapbans,. Shell thin orbicular pellucid quite fmooth fnowy: hrnge 

 with 2 teeth in each valve. 

 Inhabits Africa, Adans Jeneg. 1. tab. 16. fig. 8; 

 Shell about an inch and a half in diameter. 



Dura. Shell fuborbicuiar comprelTed hard tranfverfely grooved, 

 reddifh with brown rays, within violet. 

 Adamfeneg. i.tab, 17, fig- 12, 



Inhabits Africa', about 6 inches braad, 4 \ long: probably not 

 of this Genus. 



Ehurnea, $\\e\\ orbicular compreiTed fnowy, with longitudinal rounded 

 grooves crofled by tranfverfe ftriae. 

 Adans feneg. I. tab. iS.fig, 3. 



Inhabits Africa: about 9 lines in diameter :. grooves 26 — 30; 

 hinge with very ihort teeth . 



ludda. Shell tranfparcnt, pale fulvous within and without, witk 

 very fine longitudinal grooves. 

 Inhabits Africa. Adans feneg. i,tab. lS.fig. 4. 

 About 16 lines long and not fa much broad. 



