152 DONAX. 



t. 88. f. O. Adanson Seneg. t. 18. f. 3. Argentine, t. 22o 

 f. L. Knorr, ii. t. 23. f. 2 and 3. Favanne, t. 49. f. E. 3 1 

 Inhabits the Mediterranean. Linnceus. Sandy shores at Cape 

 Manuel on the Western Coast of Africa. Adanson. West 

 Indies. Knorr. Coast of Britain. Pennant, fyc. 

 Shell commonly about seven lines long, and more than ten 

 broad ; white, or lead colour, with paler transverse bands, 

 and longitudinal purple rays, and the inside is purple ; it is 

 striated longitudinally with the interstices dotted, and the an- 

 terior slope is divided by a longitudinal prominent ridge, and 

 transversely striated. 



plebeia. 9. Shell oval, compressed, smooth, ob- 

 soletely striated transversely, and the margin 

 very entire ; hinge with strong teeth. 



Donax plebeia. Solander's MSS. Pulteney, Dorset Cat. 

 p. 32. Montagu Test. p. 107. t. 5. f. 2. Maton and 

 Racket, in Lin. Trans, viii. p. 76. Dorset Cat. p. 38. 

 t. 5. f. 13. 

 Tellina variegata, Var. y. Gmelin, p. 3237. 

 Tellina, No. 35. Schroeter Einl. iii. p. 12. 

 Lister Conch, t. 389- f. 22S. 

 Inhabits the coast of Dorsetshire. Pulteney, fyc. 

 Shell about half an inch long, and three-quarters of an inch 

 broad ; thick, strong, glabrous, of a dull yellowish horn 

 colour, marked with two brownish longitudinal rays, and dis- 

 tant obsolete transverse furrows ; the inside is paler than the 

 outside, and the teeth of the hinge are remarkably large, 

 considering the size of the shell. 



castanea. 10. Shell ovate, glossy, and slightly 

 wrinkled transversely ; hinge with one large 

 and one small primary tooth in each valve, 

 and no lateral teeth. 



Donax castanea. Montagu Test. p. 573. t. 17. f. 2. Ma- 

 ton and Racket, in Lin. Trans, viii p. 77. 



Inhabits the coasts of the West of England. Montagu. 



Mr. Montagu says that this shell comes nearest to D. plebeia 

 in shape, being sub-cuneiform, and the teeth are equally 

 strong in proportion to its size ; in these, however, it differs, 

 especially in their obliquity, being the reverse of eat h other ; 

 that shell too has a lateral tooth, and the beak turns towards 

 the posterior side, whereas in this, if any thing, it is inclined 

 to the anterior side ; it is about a quarter of an inch long, 



