266 SOLECURTID^. 



Mr. M'Aiitlrew dredged it in the Hebrides, Zetland, and 

 off Caithness (but never alive); it has also been met with in 

 Skye by Mr. Barlee (Jeffreys, Ann. Nat. H. vol. xix. p. 

 314). 



It ranges to the Mediterranean. 



SPURIOUS. 

 S. BiDENs, Chemnitz. 



Sole'n divisus, Speng. Skrivt. Nat. Selskab. vol. iii. pt. ii. (1794), p. 96, (from 

 0. Fabr. Skriv. Nat. Selsk. vol. iv. pt. ii. pi. 10, f. 11, 12. 



Solen bidens, Chemn. Conch. Cab. vol. xi. p. 203, pi. 198, f. 1939.— Hanl. Re- 

 cent Shells, p. 16. 



Sok7i frciffilis, Pulteney, Hutchins Hist. Dorset (1799), p. 28.— Mont. Test. 

 Brit. pp. 51, 565, and Suppl. p. 26; Dorset Catal. p. 29, 

 pi. 4, f.5. — TuRT. Conch. Diction, p. 163. — Flem. Brit. Anim. 

 p. 460.— Wood, General Conch, p. 126, pi. 29, f.4, 5; Brit. 

 Marine Conch, p. 37. — Dillw. Recent Shells, vol. i. p. 65. — 

 Index Testae, pi. 3, Solen, f. 11. — Gould, Invert. Massachiis. 

 p. 31. — Conrad, Americ. Mar. Conch, pi. 4. 



Solen centralis. Say, Jour. Ac. Philadelp. vol. ii. p. 316 {fide Gould). 



Psamiuobia tcBniata, Turt. Dithyra Brit. p. 85. 



Elongated-suboval. (not unlike a bean-pod,) not strong, nor 



opaque, subequilateral, covered with a yellowish drab-coloured or 



olivaceous yellow epidermis, which is more or less firm and glossy, 



and is wrinkled posteriorly. Valves smooth, rather compressed, 



contracted in the middle, white both within and without, with a 



short and almost perpendicular broad, purplish ray under the beaks, 



and a tinge of the same colour, occasionally ray-shaped, under the 



ligament, besides two narrow, approximate, white oblique rays 



behind the central one, which are visible beneath the epidermis, 



but become obsolete in aged specimens. Ventral margin incurved, 



not rising but well arcuated at both extremities. Dorsal edges 



scarcely at all sloping, their declination almost equal, both very 



slightly convex. Both extremities simply rounded, that of the 



hinder side (which is very slightly the longer) rather the more 



so. Hinder tooth of the right valve erect, peculiarly expanded 



at its apex, and sublaterally bifid. 1| — !• ^' Indies, d:c. : 



introduced as from Dorsetshire hy Dr. Pidteney. The name of 



Spengler, whether it he bidentatus, as asserted by Chemnitz, or 



