58 SOLEN. 



broad, sometimes larger, straight, cylindric, margined at one, 

 and somewhat truncated at both ends ; colour orange-yellow, 

 or stained with brown by the mud, and marked with striae 

 which change their direction abruptly from transverse to 

 longitudinal ; the hinge is placed at one end, and consists of 

 a single horizontal tooth in each valve, which lie by the side 

 of each other when closed. 



truncatus. 2. Shell linear, straight, truncated at 

 one end ; hinge with a single opposite tooth 

 in each valve. 



Solen truucata. Wood's Conch, t. 26. f. 3 and 4. 

 Solen Ceylonensis. Leach Zool. Mag. i. p. 22. t. 7. 

 Gua/ter, t. 95. f. D. Knorr, i. t. 28. f. 3. Chemnitz, vi. 

 t. 4. f. 2S. Barbut Verm. t. 2. f. 4. Enc. Method, t. 

 222. f. 1. 

 Variety. Shorter, and somewhat tapering towards its rounded 

 end. 



Bumphius, t. 45. f. M. Gualter, t. 95. f. E. Argenville, 

 t. 28. f. K. Favanne, t. 55. f. B. 1. Wood's Conch. 

 t. 'a. f. 2. 

 Inhabits the American and Indian seas. Wood. 

 Mr. Wood and Dr. Leach have separated this species from 

 S. Vagina, with which it had been before confounded, and 

 which it greatly resembles ; there is not, however, the ves- 

 tige of a margin, and Mr. Wood says, it may be immediately 

 distinguished by its truncated end, which is so perfect that it 

 appears as if pared down by art, till the teeth are seen close 

 to the edge of the shell. 



novactjla. 3. Shell linear, straight ; hinge with a 

 single curved tooth in each valve, clasping 

 into each other. 



Solen Novacula. Mo?itagu Test, p. 47. Maton and Rac- 

 ket, in Lin. Trans, viii. p. 44. Wood's Conch, p. 119- 



Inhabits the sandy shores of Carmarthenshire, near Laugharne. 

 Montagu. Swansea, but not common. 



This shell in all other respects resembles S. Siliqna, from 

 which it differs, in having at the end of each valve only a 

 single blunt tooth, which are curved in opposite directions, 

 and hook into each other, and in the hinge being destitute 

 of lateral laminse. 



siliqua. 4. Shell linear, straight; hinge with a 

 double tooth in one valve. 



