49 



S. with a ftraight cy iindric (hell, rather truncated at both 

 ends ; that end next the hinge a little reflecled ; Ilriated 

 tranfverfely, each ftria turning longitudinally acrofs the 

 fhell, but not marked with a diagonal line : hinge clofe to 

 one end, furnifhed with a fingle fmall comprefled tooth 

 in each valve, which lie by the fide of each other when 

 clofed : no lateral laminae : colour orange-yellow. Length 

 about three-quarters of an inch, and rarely more than 

 four inches broad. 



This feems to be rather a fcarce fpecies ; at leaft w^e 

 have never met with it but on the fandy fhores of Caer- 

 viarthenjhire near Laugharne. Mr. Pennant fays it in- 

 habits Red Wharf, Anglefea. Doftor Pulteney men- 

 tions it being dredged up at Weymouth, but rare. 



5. 

 Solen pellucidus. Br. Zool. t, 46. f. 23. Pellucidus. 



Tiirt. Lin. iv. p. 181. 



S. with an oblong fub-arcuated, pellu'jid, fragile fhell ; 

 compreffed, and rounded at each end, covered with a 

 greenifh epidermis : hinge near to one end, furnifhed with 

 a fingle fmall tooth in one valve, locking into two in the 

 oppofite, with a lateral procefs in each. Length a quar- 

 ter of an inch: breadth little more than an inch. 



This fhell which was firfl noticed by Mr. Pennant, 

 was totally neglefted by Da Costa, who might perhaps 



H never 



