24 



the (hell reticulated, and feparated from the plain fide by 

 a broad furrow down the middle, extendmg from the 

 umbo or beak to the oppofite margin : hinge reflex, 

 fmooth, forming a cavity or furrow at the anterior end : 

 this end is truncated obliquely to the front margin, which 

 forms a fort of beak or angle at the end next to the 

 hinge. 



Infide fmooth, glofly ; an elevation acrofs the middle 

 caufed by the furrow on the outfide: tooth long, flat, 

 much curved: colour whitifli, or tinned ferruo;inou.s. 

 Length fometimes, nearly two inches ; breadth above 

 three, but more commonly much lefs. 



This fpecies is found on various parts of our coafl, bur- 

 rowed in clay or lime-ftone ; but fparingly on the weftern 

 fhores, and thofe fmall and dead fpeciinens; indeed we 

 believe it is no where plentiful of a large fize. 



Donovan has figured the young of this fpecies for 

 the Pholas Parvus, but has followed Da Costa in ex- 

 prefling a doubt of its being diftin6l from the Crifpata. 

 Had thefe authors ever fecn the true Parvus fuch doubts 

 never could have arifen. 



4. 

 Candidus. Pholas Candidus. Lin. Syji. p. 1111. 23. — G/ncl SyJL p. 



32115. 4. 

 C/iem. Conch, viii. t. 101. f. S61. 862. 

 Lijier. Conch, t. 435. f. 21%.— Id. An);, t. 5. 

 f. 39. Pholas 



