SOLEN. 63 



covered with an orange-brown epidermis, and finely striated 

 concentrically ; the margin is inflected, and the valves, when 

 closed, touch only at the inflected part and the hinge ; the 

 hinge has two teeth in one valve, and one in the other, and 

 there is a prominent well defined rib, extending somewhat 

 obliquely towards the margin. 



diphos. 15. Shell oval, smooth, and inflected 

 towards one end ; umbones prominent. 



Solen Diphos. Linnaus Mantissa, p. 544. Chemnitz, vi. 

 p. 68. t. 7. f. 53 and 54. and xi. p. 200. t. 198. f. 1933. 

 Schroeter Einl. ii. p. 634. Gmelin, p. 3226. Wood's 

 Conch, p. 133. t. 32. f. 3. 

 Inhabits the Indian Ocean. Linnaus. China. Chemnitz. 

 Shell an inch and a half, or two inches long, and often nearly 

 twice as broad, but the anterior end, whose margin is in- 

 flected, is more extended in some specimens than in others ; 

 when stripped of its green epidermis, the colour is pale 

 violet, with numerous darker diverging rays, and there are 

 also sometimes two similar white rays spreading obliquely 

 from the hinge towards the anterior margin ; the hinge has 

 two teeth in one valve, and one in the other, and the whole 

 inside is of a violet colour. 



kadiatus. 16. Shell oval, straight and smooth; 

 hinge with two teeth in each valve, and a 

 strong white longitudinal rib. 



Solen radiatus. Linnaus Syst. Nat. p. 1114. Bom. Mas. 

 p. 26. Chemnitz, vi. p. 54. t. 5. f. 38 to 40. Schroeter 

 Einl. ii. p. 629. Gmelin, p. 3225. Barbut Verm. p. 22. 

 t. 2. f. 6. Wood's Conch, p. 128. t. '31. f. 1 and 2. 

 Lister Conch, t. 422. f. 266. Rumphius Mas. t. 45. f. E. 

 Petiver Amb. t. 2 1 . f. 16. Gualter, t. 9 1 . f. B. Argen- 

 ville, t 22. f. P. Knorr, i. t. 6. f. 5. Favanne, t.49. f. 

 C Erie. Meth. t. 225. f. 2. 

 Inhabits the coasts of Amboyna. Rumphius. Java. Solander. 



China. Humphreys. 

 Shell about an inch, or an inch and a quarter long, and thrice 

 as broad ; thin, brittle, striated concentrically, and when 

 stripped of its green epidermis, appears both within and 

 without of a delicate violet colour, with from two to four 

 white longitudinal rays, which become broader towards the 

 margin ; the hinge has two teeth in each valve, and has a 

 strong white depressed rib extending somewhat obliquely 

 along the inside of the shell. 



