ON THE PINNA INGENS. 10$ 



species is doubtless the same as Mr Pennant 

 " noticed in the cabinet of Dr Walker of Mof- 



We next find Pinna ingens, noticed in the 7th 

 vol. of the " Linnean Transactions," in a long and 

 elaborate paper on British Conchology, by Dr 

 Maton and the Reverend T. Racket. From their 

 account a doubt also exists with them ; for 

 after having noticed the shell described by Mr 

 Montagu, and the one figured by Mr Donovan, 

 they add, " Specimens from Scotland and the 

 " western coast do not appear to differ \ and 

 " there is great probability that this is the species 

 " mentioned by Pennant," 



Having thus pointed out the doubts and errors 

 that have arisen respecting this shell, it fails to my 

 lot to clear up the mystery. This (as already 

 hinted) I am fully enabled to do, by having in the 

 first place received specimens from my friend Mr 

 Montagu, of his Pinna ingens of the western 

 coast, and by having seen the Pinna laevis of Dono- 

 van ; and lastly, through the kindness of my 

 friend P. Walker, Esq; of Drumsheugh, who 

 obligingly offered me the inspection of the origi- 

 nal specimen, remaining in the cabinet of the 

 late Dr Walker of Moffat. 1 am therefore confi- 

 dent in saying, that the Pinna ingens cf ^Pennant, 

 the Pinna ingens of Montagu, the Pinna Isevis of 

 Donovan, the Pinna borealis of Stewart, and the 



