190 CONCHYLIA— D/Tf^YE^. 41. 



Cardium medium. Linn. Syst. Nat. p. 1122. 



Gmelin, Syst. p. 3246. 



Turton, Linn. Syst. iv. p. 200. 



Pennant, Brit. Zool. iv. p. 168. 



Donovan, i. tab. 32, fig. 1. 



Montagu, Test. Brit. p. 83. 



Linn. Trans, viii. p. 61. 



Turton, British Fauna, p. 153. 



Wood, Conch, p. 211, tab. 50, fig. 3. 



Dillwyn, Descript. Catal. p 113. 



Turton, Conch. Diet. p. 32. 

 Pectun cuius subrufus, Lister, Conch, tab. 316, fig. 153. 

 Mus. nost. A very small specimen taken alive at Livermead, near 

 Torquay. 



Shell^l yellowish-white with reddish-brown blotches ; ribs about 

 fifty, rather obscure in the middle but stronger at the sides espe- 

 cially the shorter one, where they are crossed by fine striae which 

 pass over but do not cut the ribs : one of the primary teeth minute 

 or obliterated in each valve. 



tevigatum. Caedium testd obovatd nitidd, costis ohsoletis, latere antico glaberrimo. 

 Shell oboval glossy, with the ribs very obscure, and quite obliterated 



at the anterior end. 

 Cardium Isevigatum. Linn. Syst. Nat. p. 1123. 

 Gmelin, Syst. ix 3251. 

 Turton, Linn Syst. iv. p. 201. 

 Pennant, iv. p. 188, tab. 54, fig. I. 



