SOLEN. 119 



CARMARTHENSHIRE RAZOR. 



2. Solen Novacula. S. testa lineari recta, cardinibus unidentatis. Linn. 



Trans. 8.- p. 44. 

 Shell linear, straight ; hinge with a single tooth in each valve. 

 Mont. Test. Brit. p. 47. 



As this is evidently a new shell, and described only 

 by Mr. Montagu, it will be but just to mark its specific 

 difference in his own words. 



" Solen with a straight sub-cylindric shell, in every 

 respect like the Siliqua, except in the hinge, in which it 

 is essentially different, being furnished with one strong, 

 blunt, curved tooth, in each valve, at one end, destitute 

 of lateral laminae : these teeth turn contrary ways, and, 

 when closed, clasp or hook into each other. . This 

 species may possibly have been confounded with the 

 foregoing from its external similitude, for we do not find 

 it noticed by any conchologist. It is found on the 

 sandy shores of Carmarthenshire, near Laugharne, 

 together with the Siliqua of a large size. We have 

 taken it full an inch long, and eight inches broad ; but 

 it is extremely rare." 



SHEATH RAZOR. 

 PL 27./. 1. 



3. Solen Vagina. S. testa lineari recta, extremitate altera marginata, 



cardinibus unidentatis. Linn. Syst. Nat. ed. 12. p. 1113. Linn. 



Gmel. p. 3223. 

 Shell linear, straight, one end margined ; hinge with a single tooth in 



each valve. 

 Lister Conch, t. 410. f. 256. Penn. Brit. Zool. 1812. v. 4. p. 171. pi. 



49. f. 1. Chem. Conch. 6. pi. 4. f. 27 ? Linn. Trans. 6. pi. 14. f. 11. 



Pult. in Hutch. Dorset, p. 28. pi. 4. f. 8. Donov. Brit. Shells, pi. 110. 



This is a perfectly straight shell, covered with an 



