44 



favoured with the examination of a fmgle fpecimen that was 

 an inch in length, a trifle broader, and of a darker colour ; 

 the only one which could be procured of that fize even by 

 dredging. 



The very great fimilitude between tliis and Venus fulcata 

 may polhbly have caufed their being confounded. That this 

 is a Scoti/b production is beyond all doubt, but how far the 

 fulcata may have been confounded with it, and thereby 

 fuppofed to have been Britijh, we have not the means of de- 

 termining, further than by the authority before ftated ; and 

 as we did not receive the information as grounded on pcrfonal 

 evidence, it is to be wifhed that, that fliell may, on a future 

 day, be taken on our fliores by fome conchologilt, in order 

 that any exifting doubts may be done away. 



The material diflindlion between thefe two fpecies is, that 

 this is broader than it is long, and has a plain margin ; 

 whereas the other meafures moll in a longitudinal dire6lion, 

 and the margin is crenulated. 



ScOTiCA. Venus Scotica. Lin. Trans, viii. p. 81. t. 2. f, 3. 



Shell thick, fub-cordated, fub-comprefTcd, with many re- 

 gular parallel tranfverfe ridges: iimho VQ^mcd: coidiform 

 deprtfllon kmceoL^te. Infide white, glofly : teeth ftrong, 

 oblique: margin plain. Length half an inch; breadth five 



eighths of an inch. 



This 



