12 



J 



quently fo flrongly reticulated as to caufe fmall warts or 

 tubercles. 



I? common on many parts of our coafl, and ufually 

 confounded with the following fpecies : the fined we ever 

 faw, were taken in the inlet between Knigsbridge and 

 Salcomb, and at the mouth of the Ann, in Devonpiire : 

 they lay in fjiallow water, or about mid-tide, fometimes 

 buried an inch or two under the fliingle ; and not uncom- 

 monly expofed on the (urface : fsze of the lafgefl, two in- 

 ches in length; and ihree in breadth. 



The animal is furniflied with two tubes, an inch or more 

 in length, which it protrudes in fearch of food; thefe are 

 divided to their origin. 



16. 

 Chem. Conch, vii. t. 42, f. 439. Pullastra, 



Lin. Trans, vi. t. 17. f. 13. 14. (IVood.) 



V with a fub-oval, finely decuffated fliell ; the antierior 

 end fub truncated, or fomewhat anoulated like the laft; 

 indeed it i< lo nearly allied to the Venus dcciiJfjLta^ that it 

 has generally been confounded for the fame. 



The principal dillinfiions are, that this does not grow 

 to he fizp of that fhell ; the ftrias in both dircftions 

 are much finer, regular, and equal on all parts except at 

 the anterior end. where it frequently runs into tranfverfe 

 jidgr- : the teeth are nearly fimilar, but in general are 



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