8^ CONCHYLIA— I>7r/717^^. 25. 



Shell straight, in one valve a isinglc compressed o'jtuse slightly 

 cloven tooth, and two in the other. 

 Tab 7iost. 6, g. 6. 

 Mus. nost. From the s;mds in Torbay. 



Shell resembling the Solen Siliqua in every respect, except in the 

 teeth, which preserve a constant character. In the species under 

 consideration, the single tooth is compressed, rounded and obtuse 

 at the top where it is slightly cloven. 



In the Solen Siliqua the tooth is depressed or flattened in a con- 

 trary direction, with a strong rib in the middle ending in an ex- 

 tremely sharp acicular point answering to its description by Linne 

 in the Mus. Lud. Ulr. p. 473, "Cardo dente unico subulato in altera 

 testa." Hinge with a single subulate tooth in one of the valves. 



On the sands at Tor Abbey, at low water mark, this species may 

 be dug up in great abundance, mixed with the Solen Siliqua and 

 S. Vagina, and is probably equally common on all sandy shores : 

 but the differences may not have been remarked, as cabinet sj)e- 

 cimens in general are dead shells, with the teeth shed or much 

 defaced. 



En?is. SoLEN testa suharcuatd, valvd altera unidentatd, altera bidentatd 

 dentibus simplicibus. 

 Shell somewhat curved, with a single tooth in each valve and two 



in the other, all undivided. 

 Solen Ensis. Linn. Syst. Nat. p. 1114. 



Gmelin, Syst. p. 3224. 

 Turton, Linn. Syst. iv. p. 180. 

 Pennant, Brit. Zool. iv. p. 172, tab. 48, fig. 2. 



