H$ WORMS. TESTACEA. 6t; Donax. 



Muricata. Shell ovate, with muricate ftria?: the- r\jir in denticulate. 

 Inhabit?, the Indian Ocean Mitf. Lud Vit. 496 n. 54. 

 Shell gibbous reddifh, t e fronta. margin ^ p.n^ and ending each 

 fide in a comprefted tooth. 



* Iriii, Shell oval, with' tranfverfe waved ereel ftriate membrana- 

 ceous wrinkles or foliations. 



Donovan s Brit. Shell:, i tab. 29. fig, 2. 



Da Cojla Brit. Conch, tab. l$*fig* 6. 



Gua/t, left tab. q^.fig. A. 



Chemn. conch. 6 tab. 26 Jig. 268 — 270. 



Inhabit 1 : the Mediterranean, and is found frequently on the moref; 

 of De-vonflure and Cornwall buried in the fands: about the 

 fize of a fmall kidney-bean; the anterior parts very obtufe and 

 marked with arched wrinkles which .ire erect- and a little re- 

 flected and l.'.rger towards the lim: the hinge fomewhatrefembles 

 that of a Venvfs. 



Laevigata; Shell obtufe before, obfoletely ftriate at the fides, yellowilh- 

 green within and violet at the beaks; margin very 

 entire: hinge without marginal teeth. 



Chemn. conch. 6. tab. 25 fig. 249. 



Inhabits ^.rannuebar; an inch and 6 lines long, 2 inches 3 lines 

 broad : margins near the beak a little incumbent. 



Spinofa. Shell fnowy, within blueim: the hind-part fitiooth and 

 perpendicularly ftriate, fore-part truncate and very 

 finely cancellate ; the angles fpinous. 

 Chemn. conch. 6. tab. 36. fig. 258. 



Inhabits Tranquebar; very rare: beaks glabrous* hinge as in' 

 D. rugofa. 



lncarnata. gh e n flefh-colour, the anterior part truncate wrinkled and 

 marked with reticulate ftrias,- hind-part wedge-fhaped 

 and furrowed with fine perpendicular ftrise. 



Chemn. conch. 6. tab. 26. fig. 259. 



Inhabits Tranquebar ; fomctimes croifed with a few yellowilhf 

 bands. 



Argentea. Shell oval fmooth, olive green within filvery: the margin 

 with more elevated acute teeth near the hinge. 

 Inhabits Guait,test. tab, S3. fig. R. 



Bk-elor. Shell ovate, with elevated ftrix crofting a few tranfverfe 

 ones; rufous with a white rayon one fide, 

 Inhabits Gualt. test. tab. SS.fig. S. 



Radiata . 





