Mr. E. A. Smith on the Genus Splienia. 279 



SphcBnia Binyhami, Forbes and Ilanley, Brit. Moll. vol. i. p. 190, pi. T, 



fig". 3, and pi. ix. figs. 1-3. 

 Mya Bimjhami, Jeffreys, Brit. Condi, vol. iii. p. 70, pi. L. fig. 3. 



Hah. Great Britain, France, Spain, Piedmont, Algeria, 

 Tunis. 



2. Sphenia RuppelUi, A, Adams. (PI. XV. A. figs 2, 3.) B.M. 

 Sjjlucnia RuppelUi, A. Adams, Proc. Zool. Soc. 1850, p. 89. 



Hah. Red Sea. 



This is a true Sphenia, and lias been wrongly transferred 

 to Cryinomya in the Paetel Catalogue, p. 21. It is clothed 

 more or less with a yellowish epidermis, and is peculiar on 

 account of a few radiating lines upon the anterior end of the 

 valves. 



3. >S;?//e/«m/Y/^i7/s, Carpenter. (PI. XV. A. figs 4,5.) B.M. 



Sphama fnujiUs. Carp. Mazatlan Cat. p. 24. 



Sphenia frayilis^ Be Folin, Les Mel6agrinicoles, p. 15, pi. ii. tig3. 7-9. 



Hah, Mazatlan, west coast of Mexico. 



The types of this species in the British Museum are rather 

 more equilateral than the shell figured by De Folin. Curhula 

 htticola, Valenciennes (Voy. Venus, Zool. Atlas, pi. xxiv. 

 figs. 6, 6 a) , has never, as far as I can discover, been 

 described. Carpenter suggests that it may be the same as his 

 S.Jragilis. This may be so, but witliuut examining the type 

 it is impossible to determine definitely The form and size of 

 the shell, its position in a crypt, and the tooth of the left 

 valve are characteristic of Sphenia. 



4. Sphenia hilirata, Gabb. 



Sphenia hiliruta, Gabb, Proc. Ac. Nat. Sci. Pbilad. 1801, p. 309. 



Hah. Santa Barbara, California. 

 Perhaps the young stage of Saxicava. 



5. Sphenia ovoidea. Carpenter. 



Sphania ocoidea. Carp. Proc. Ac. Nat. Sci. Philad. 1805, p. Gi. 



JIah. Puget Sound. 



S. avails, Carp. (Moll. West. North Anier. p. 168), appa- 

 rently is a misprint for ovoidea. 



^. Sphenia 2)erversayB\ii\\{ox A. (PI. XV. A. fig. 6.) B.M. 



Sphenia perveisa, Blanford, Journ. Asiat. Soc. Bengal, vol. x.xxvi. (ii.) 

 p. G8, pi. xiv. figs. 4-6 (1807). 



JIah. Delta of the Irawady, Pegu; in burrows in stone, 

 apparently the holes of Martesia. 



Mr. Blanford makes a curious mistake with regard to the 



