128 SOLEN. 



DUCK-BILL RAZOR. 

 PI. 30. /. 2, 3, 4. Mr. JENNINGS. 



13. Solen anatinus. S. testa membranacea inflata pilosa, cardinis costa 

 falcata. Linn. Syst. Nat. ed. 12. p. 1115. Linn. Gmel. p. 3225. 



Shell membranaceous, inflated and hairy; hinge with a crooked rib. 



Rumph. Mus. pi. 45. f. 0. Argenville Conch, pi. 22. f. R. Born Test. 

 p. 23. Chem. Conch. 6. pi. 6. f. 46 — 48. Encycl. Method, pi. 

 228. f. 3. a. b. 



This is a very singular shell, pellucid, white, and 

 thin as paper. It is much inflated, and one end resem- 

 bles the beak of a duck. The hairiness mentioned by 

 Linnaeus, may exist in some states of the shell, but it 

 has not been visible in any specimens seen by the 

 author. There is a spoon-shaped tooth in each valve, 

 with a curved rib running towards the interior of the 

 shell. A delicate suture is continued a little way from 

 the apex of the shell, which often cracks. 



The S. anatinus inhabits the sandy shores of the 

 Indian Ocean. 



RAYED RAZOR. 

 PL 31. /. 1, 2. Mrs. Mawe. 



14. Solen radiatus. S. testa ovali, recta, Itevi ; costa transversali adnata, 

 depressa. Linn. Syst. Nat. ed. 12. p. 114. Linn. Gmel. 3225. 



Shell oval, straight, and smooth, with a transversal depressed rib. 



List. Conch, t. 422. f. 266. Rumph. Mus. t. 45. f. E. Gualt. Test. t. 91. 

 f. B. Knorr. Vergn. 1. pi. 6. f. 5. Barbut's Shells, pi. 2. f. 6. 

 Chem. Conch. 6. pi. 5. f. 38 — 40. Encycl. Method, pi. 225. f. 2. 



A thin smooth species, gaping at both ends, and ori- 

 ginally covered with a green epidermis, which falls off, 

 and leaves a delicate violet shell, finely striated concen- 

 trically, and marked with four white rays, diverging 



