TELLINA. 89 



beak, and the inside is reddish white ; the hinge has two 

 teeth in one valve, and one in the other ; the lateral teeth 

 are sharp pointed. 



nivea. 39. Shell oval, compressed, somewhat an- 

 gular on the anterior side ; hinge with a soli- 

 tary, cleft, primary tooth in one valve inserted 

 between two others in the opposite valve. 



Tellina nivea. Wood's Conch, p. 177. t. 46. f. 1. 



Inhabits the American Ocean. Wood. 



Shell an inch and an eighth long, and the breadth an inch 

 and five-eighths ; Mr. Wood says, it is a smooth delicate 

 shell, perfectly white, of an oval shape, rounded at one end, 

 and rather produced and angular at the other ; besides the 

 teeth mentioned in the specification, there is one rather 

 remote. 



sulcata. 40. Shell oval, flat, transversely grooved, 

 and angulated and inflected at the anterior 

 end ; hinge with two teeth in one valve, and 

 the lateral teeth prominent. 



Tellina sulcata. Wood's Conch, p. 178. t. 47. f. 1. 



Inhabits 



Shell rather less than half an inch long, and about an inch and 

 three-eighths broad, straw coloured both within and without, 

 and grooved transversely ; the posterior end is rounded, and 

 the other angulated, inflected, and undulated ; and the trans- 

 verse grooves are so strong, that they give the margin of the 

 cartilage slope some appearance of being toothed. Mr. 

 Wood describes the hinge with two cleft teeth in one valve, 

 and one in the other, and he says it resembles T. crystallina 

 of Chemnitz, which species I have thought undeserving of 

 notice, because both the figure and description are taken 

 from only a single valve. 



donacina. 41. Shell ovate, compressed, flattish, 

 with the anterior end somewhat truncated ; 

 hinge rather lateral. 



Tellina Donacina. Linnaeus Syst. Nat. p. 1118. Schroeter 

 Einl. ii. p. 655. Gmelin, p. 3234. Dorset Cat. p. 29. 

 t. 12. f. 3. b. Montagu Test. p. 58. t. 27. f. 3. Maton 

 and Racket, in Lin. Trans, viii. p. 50. 1. 1. f. 7. Wood's 

 Conch, p. I6l.t. 45. f. 5. 



Gualter, t. 88. f. N. 



