CARDIUM. 29 



Bay (Jeffreys) ; and Exmouth offing, seven miles from 

 land (Clark). On the east coast it is taken at Scarbo- 

 rough (Bean), and is locally abundant on the Northumber- 

 land and Durham coasts (Alder). It is rare in the Irish 

 Sea. Dredged very sparingly in Belfast Bay and Strang- 

 ford Lough in from six to ten fathoms, by Mr. Hyndman 

 and Mr. Thompson. Portmarnock (Warren) ; Birterbuy 

 Bay (Barlee) ; Bantry Bay (Humphreys). On the west 

 coast of Scotland it is frequent, occuri-ing chiefly in from 

 fifteen to thirty fathoms, as at Oban, Skye, and Loch 

 Fyne (M'Andrew and E. F.). Mr. Jeffreys and Mr. 

 Barlee have taken it in many places among the Hebrides. 

 Off the coast of Zetland it rang-es from shallow water to 

 considerable depths, occurring near shore in from five to ten 

 fathoms, and on the Ling banks, thirty or forty miles from 

 land, in fifty fathoms (M'Andrew and E. F.). 



It ranges to the Norwegian Seas (Loven). As a fossil 

 it dates back as far as the epoch of the Coralline Crag 

 (Searles Wood). 



C. PYGM^UM, Donovan. 



Small, subrhomboidal, very inequilateral, compressed in front, 

 ventricose, and sharply angulated at the umbonal ridge : front 

 extremity narrow and angulated ; hinder extremity very broad, 

 and biangulated. 



Plate XXXII. fig. 8, and (Animal) plate N. fig. 2. 



List. Historia Conch, pi. 317, f. 154. 

 Canlium })i/gmceum, DoNov. Brit. Shells, vol. i. pi. 32, f. 3. 



„ cdiguum, Mont. Test. Brit. p. 82. — Linn. Trans, vol. viii. p. 61. — Dor- 

 set Catalogue, p. 31, pi. 2, f. 11. — Turt. Conch. Diction, p. 

 31.— TuRT. Dithyra Brit. p. 186.— Flem. Brit. Anim. p. 

 422.— Macgillivray, Moll. Aberd. p. 273.— Brit. Marine 

 Conch, p. 97.— Brown, Illust. Conch. G. B. p. 88.— Wood, 

 General Conch, p. 212. — Dillw. Recent Shells, vol. i. p. 114. 

 — Lam. Anim. s. Vert. (ed. Desh.) vol. vi. p. 408.— Philippi, 



