186 TELLINA. 



THICK TELLEN. 

 PL 40. /. 1. 



75. Tellina crassa. T. testa subrotunda, depressa, sulcis transversalibus 



numerosissimis. Act. Soc. Linn. p. 55. 

 Shell roundish, depressed, with numerous transversal furrows. 

 List. Conch, pi. 299. f. 136. Penn. Brit. Zool. 4. pi. 48. f. 28. Da Costa 



Brit. Conch, pi. 13. f. 4. Pult. in Hutch. Dorset, pi. 7. f. 4. Mont. 



Test. Brit. p. 65. Donov. Brit. Shells, pi. 103. 



A thick, strong, suborbicular shell, of a white colour, 

 strongly striated concentrically, and sometimes marked 

 with faint, reddish, longitudinal rays : one valve is more 

 convex than the other ; both ends are rounded, but one 

 end is more extended than the other ; the apex turns 

 inwards. The inside is white, or yellowish, or blushing ; 

 hinge with two small primary teeth ; one lateral tooth 

 in the shallow valve, and two in the deep valve ; the 

 strong tooth nearest the hinge. Length an inch and 

 three quarters ; breadth two inches and an eighth ; sel- 

 dom much larger, but often smaller. 



Inhabits the British shores, but is not common in a 

 live state, or with both valves perfect. It is found on 

 the Devonshire, and Cornish coasts, at Weymouth, and 

 in Wales ; single valves are not uncommon upon the 

 Sandwich shore. 



This shell was first figured, very admirably, by Lister, 

 who procured his specimen from Guernsey. Gmelin 

 has erroneously called it a Venus. See Syst. Nat. 

 p. 3288. It is the Pectunculus depressior of Da Costa, 

 and the T. rigida of Dr. Pulteney, and Mr. Donovan. 



