218 



CONCHYLIA— D/THYi?^. 47. 



Tab. nost. 17, fig. 4, 5. 

 Pecten fragilis. Montagu, Test. Brit. Suppl. p. 02. 



Pennant, Brit. Zool. iv. p. 223. 

 Pecten bullatus. Chemnitz, vii. p. 348, tab. 68, fig. 619, b. 

 Ostrea fasciata. Dillwyn, Descript. Catal. p. 269. 

 Ostrea fragilis Turton, Concb. Diet. p. 131. 



Mus. 7iost. Devonshire coast, and Br^y in Ireland. 



Shell three quarters of an inch long, and barely half an inch 

 broad, very convex, and much curved outwards on one side, with 

 numerous raised longitudinal strife which are a little undulated, 

 with three or four lesser ones between each of them : the cardinal 

 margin rather oblique. 



subauricu- IjIma testd compressd subccqidlaterali, striis longitudinalibus rectis 

 1. (cqualibus, auricuUs subrectilinearibus. 



Shell riattish and nearly equilateral, with longitudinal straight 

 striffi which have no lessor ones between them, and the auricles 

 nearly rectilinear. 

 Pecten subauriculatus. Montagu, Suppl. p. 63, tab. 29, fig. 2. 



Pennant, Brit. Zool. iv. p. 224. 

 Pecten fragilis Chemnitz, vii. p. 349, tab. 68, fig. 650. 



Ostrea subauriculata. Turton, Conch. Diet. p. 131. 

 Ostrea bullata. Dillwyn, Descript. Catal. p. 270. 

 Mus. nost. From the western coasts. 



Shell much flatter and more elongated than the Lima bullata, 

 a little unequal at one of the sides, but not so much as in that 

 shell, with the cardinal margin in a nearly straight line ; the 



