256 solecurtid.t;. 



closely resembling Phonis, a genus of Gasteropoda, we do 

 not adopt it here. 



C. LEGUMEN, Linna?us. 



Plate XIII. fig. 2, (under the name oi Sokn legume?!), and (animal) 

 Plate I. f. 4. 



Lister, Hist. Conch, pi. 420, f. 264. 



Solefi kffumen, Linn. Syst. p. 1114. — Penn. Brit. Zool. ed. 4, vol. iv, p. 84. 

 pi. 46, f. 24.— Da Costa, Brit. Conch, p. 238.— Donov. Brit. 

 Shells, vol. ii. pi. 53.— Dorset Catal. p. 29, pi. 4, f. 4.— Mont. 

 Test. Brit. p. 50.— Linn. Trans, vol. viii. p. 45. — Turt. Conch. 

 Diction, p. 162. — Flem. Brit. Anira. p. 459. — Brit. Marine 

 Conch, p. 36. — Born, Mus. Caes. pi. 2, f. 1, 2.— Chemn. 

 Conch. Cab. vol. vi. p. 49, pi. 5, f. 32, 33, 34.— Wood, Gene- 

 ral Conch, p. 124, pi. 28, f. 4.— Poli, Test. Sicil. vol. i. pL 

 1 1, f. 15. — DiLi.w. Recent Shells, vol. i. p. 60. — Lam. Anim. 

 s. Vert. (ed. Desh.) vol. vi. p. 57. — Woodarch, Conch, cd. 2. 

 pi. 1, f. 9. — Index Testae, pi. 3, Solen, f. 8.— Philippi, Moll. 

 Sicil. vol. i. p. 4, and vol. ii. p. 5.— Desh. Elem. Conch, pi. 6, 

 f. 8, 9, 10.— Hanl. Recent Shells, p. 13, pi. 3, Solen, f. 8.— 

 Chenc, 111. Conch. Solen, pi. 2, f. 1. — Desh. Exp. Scien. 

 Alger. Moll. p. 185. 



Psammobia , Turt. Dithyra Brit. p. 90. 



SolcnocuHus , Brown, 111. Conch. G. B. p. 113, pi. 47, f. 8, 9, 9.* 



Solen gousse, Chenu, Traite Elem. p. 42, f. 132 (hinge). 



Eneyc. Meth. vers. pi. 226, f. 3. 



This graceful bivalve is of an elongated shape, the 

 length averaging about four-and-a-half times the width 

 of the shell. The valves are very fragile, thin, more or 

 less transparent, greatly compressed, whitish, and covered 

 with a polished light greenish-yellow epidermis, beneath 

 which the surface is almost smooth, or at most concentri- 

 cally striolated. The ventral margin is almost straight 

 for the greater part of its extent, if anything slightly retusc 

 near the middle, and rounding off at each extremity ; to 

 this the dorsal edges run nearly parallel, but both converge 

 a little anteriorly, so that the anteal extremity is the more 

 tapering; both the front and hinder dorsal edges are almost 



