BIVALVE SHELLS. 
SOLEN. 
GENERIC CHARACTER. 
Shell bivalve ; oblong ; open at both ends. 
An awl-shaped tooth turned back in each valve; often 
double on one side. 
SPECIFIC CHARACTER. 
Solen siliqua. S. testa lineari recta, cardine altero bidentato. 
Linn. Syst. Nat , Gmel. 1. p. 3223. 
A long, straight shell, having two teeth in one 
valve, and one tooth in the other. 
Solen laevis, albidus, candidus, ex fiasco et sub- 
roseo colore variegatus et fasciatus. Gault. 
Conch, pi. 95 . f. C. 
Spout Fish, Martin W. Isles, p. 6. 
Razor Fish. Rutty Dub. p. 383. 
Pod Solen. . Penn. Brit. Zool. 4. p. 83. pi. 45. £ 20. Da 
Cost. Brit. Conch, p. 235. pi. \y. f. 5. 
This shell-fish is provided with a habitation shaped 
like the handle of a razor, and therefore admirably 
calculated to assist the animal in penetrating the 
sand in which it resides. All the motions of these 
