106 TELLINA. 



pusilla. 76. Shell ovate, ventricose, thin, and 

 striated transversely; hinge with a double 

 primary tooth in one valve, and none in the 

 other. 



Tellina pusilla. Gmelin, p. 5231. Wood's Conch, p. 152. 



Tellina virginica. Gmelin, p. 3236. 



Tellina, No. 87. Schroeter Einl. iii. p. 25. 



Schroeter Fluss. p. 194. t. 4. f. 7. a and b. 



Lister Conch, t. 159- f. 15. Petiver Gaz. t. 104. f. 5. 

 Inhabits rivers in Europe. Gmelin. Rivers in Virginia. Lister. 

 Shell scarcely two lines long, and about one fourth broader, of 



a dirty white colour on the outside, and the inside very white ; 



the urn bones in the figures appear to be prominent. May 



not the minute shell mentioned by Mr. Montagu at page 



88 of his Testacea Britannica, belong to this species ? 



limosa. 77. Shell ovate, equivalve, transversely 

 striated, and purple within ; umbones pro- 

 minent, and rather acute. 



Tellina limosa. Maton in Lift. Trans, x. p. 328. t. 24. f. 

 8 and 9, and junior f. 10. Wood's Conch, p. 199. t. 46. 

 f. 4 and 5. 

 Inhabits rivers in South America. Maton. 

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

 broad; smooth, brittle, with a green epidermis, and the mar- 

 gin entire. Hinge with two teeth in one valve, and one in 

 the other, and the lateral laminae are crenated ; young shells 

 are paler, thinner, and somewhat diaphanous. 



fluminalis. 78. Shell somewhat heart-shaped, 

 triangular, ventricose, and strongly striated 

 transversely. 



Tellina fluminalis. Midler Verm. ii. p. 205. Schroeter 

 Fluss. p. 195. Gmelin, p. 3242. 



Venus fluminalis. Chemnitz, vi. p. 319- t. 30. f. 520. 



Venus, No. 11. Schroeter Einl. iii. p. 158. 



Cyclas Euphratica. Lamarck Si/st. des Anim. p. 124. 



Cyclas. Encyc. Method, t. 301. f. 2. 

 Inhabits the river Euphrates. Muller. 

 Shell about thirteen lines long, and fourteen broad ; thick, 



opake, ventricose, longer on the fore than on the hind side, 



green, and marked with strong imbricated transverse stria? : 



the inside is bluish towards the margin ; the hinge has three 



