150 



8. 

 Glaber. Pecten glaber. Br. Zool. No. 63. 



P. with a very thin (hell ; fifteen faint rays ; equal ears. 



The inner fide of the {hells marked with rays, divided 

 by a fingleyif/cMj. 



Anglefea. A fcarce fpecies. Small. 



We have been obliged to copy Mr. Pennant's defcrip- 

 tion of this fliell, not having been fortunate enough ever 

 to meet with it. The defcription does not fufficiently cor- 

 refpond with the OJlrea glabra of Linn ^ us, to induce us 

 to think it is the fame fpecies. 



9. 



I.-Evis. Peften laevis. 5r. ^ijo/. No. 67 



Tah. 4. f. 4. Oftrea laevis. Turt. Lin. iv. p. 266. 



P. with a flat, fub-orbicular, thin, pellucid OicU, per- 

 fc611y fmooth, except a few faint concentric ridges : valves 

 nearly equal; auricles ftrongly ftriated lengthways, crofled 

 with very fine ftris ; one ear much longer than the other : 

 colour yellowifli-vvhite. Infide glofly white. Length five- 

 eighths of an inch ; breadth not quite fo much. 



^Ir. Pennant feems to be the only author who has 



given this fpecies: found in Anglefea. We have found it 



at Falmouth', rarely: our fined fpecimen was dredged up 



alivCj from Salcomb bay in DevoT^piire ; this is of a pale, 



dull, orange-yellow. 



GEN. 



