61 



Ostrea sinuosa, Lin. Trans vlii. p. 99. Distortus. 



Pult. Hutch. Dorset, k 10. f. 3. 6^ p. Ud. 



This is i)Yoha.hly the 0/lrea Jin uof a of Gmelin, p. 33I9, 

 fince he refers only to the works of Lister, and thole cor- 

 re6tly ; and not the Pu/io, fo generally referred to. 



Pecten l^vis, Br. Zool. No. 67, Lxvis, 



This fliell is not lefs in obfcurity than Pedien glaber, no 

 one having thrown any additional light upon the fubje(5t 

 fince the publication of the Britijb Zoology. It is in all pro- 

 bability a very rare fpecies, and (we believe) is not in the 

 cabinet of any colledlor of Britijh fliells except our own. 

 To the eflential characters of this fpecies nothing can be 

 added to the fhort defcription given by Mr. Pennant, 

 " being perfedlly fmooth, with unequal ftriated ears." 



The largefi of the fpecimens before us, does not much, 

 exceed half an inch in diameter, and the breadth is nearly 

 equal to the length ; and except being flightly and irregu- 

 larly wrinkled concentrically, is fmooth and glofly : one 

 ear is very large, the other fmall, and flightly llriated lon- 

 gitudinally : the colour is nearly white, or pale cinerous. It 

 is a very thin femi-diaphanous fliell, and may at once be 

 diftinguillied from the plain variety of P. obfoletus by being 

 deflitute of the fhagreen appearance formed, by the minute 

 decuflate Jlria. The fpecimen adverted to was found in. 

 Falmouth harbour ; a fimilar one but fmaller was taken, 

 amongft S:rtiilarice, by trawling on the coaft of Devon ; and 



not 



