CARDIUM. 7 



It is a remarkably local shell, and we believed it peculiar 

 to the Sovith Devon coast ; it is stated, however, to have 

 been captured also in Dublin Bay and Portmarnock in Ire- 

 land, and in the Hebrides and Orkney Islands (Captain 

 Brown), but has evaded all recent researches in those dis- 

 tricts. It is rightly a member of the Lusitanian fauna, and 

 extends its range throughout the Mediterranean ; in many 

 parts of which sea it is as common as it is rare on our 

 coasts. 



C. ECHiNATUM, Limiasus. 



Large, suborbicular, more or less strong ; ribs only eighteen 

 or nineteen, much elevated, square-topped, spinous; interstices 

 with coarse irregular and somewhat flexuous elevated wrinkles. 



Plate XXXIII. fig. 2, and (Animal) Plate N. fig. 3. 



Lister, Hist. Conch, pi. 324. f. 161. 

 Cardium ecJdtiatum, Linn. Sj'st. Nat. ed. 12, p. 1122. — Penn. Brit. Zool. ed. 4, 

 vol. iv. p. 90 (badly). — Da Costa, Brit. Conch, p. 176, 

 pi. 14, f. 2. — PuLTENEY, in Hutchins, Dorset, p. 30. — 

 DoNOV. Brit. Shells, vol. iii. pi. 107, f. 1.— Mont. Test. 

 Brit. p. 78 (not variety). — Linn. Trans, vol. viii. p. 63. — 

 Dorset Catal. p. 31, pi. 6, f. 2. — Turt. Conch. Diction, 

 p. 29. — Turt. Dithyra Brit. p. 183.— Flem. Brit. Anim. 

 p. 421.— Macgill. Moll. Aberd. p. 271. — Brit. Marine 

 Conch, p. 96.— Brown, Illust. Conch. G. B. p. 87, pi. 34, 

 f. 6. — Chemn. Conch. Cab. vol. vi. p. 165, pi. 15, f. 158, 

 (badly). — Magaz, Berlin. Gesel. Naturf. vol. ii. p. 113. — 

 MuLLER, Zool. Danica, pi. 13, 14. — Wood, General 

 Conch, p. 208, pi. 49, f. 1, 2.— Lam. Anim. s. Vert. (ed. 

 Desh.) vol. vi. p. 396. — Index Testaceol. pi. 5, f. 2. — 

 Philippi, Moll. Sicil. vol. i. p. 49, and vol. ii. p. 37. — 

 Hanl. Recent Shells, vol. i. p. 131, pi. 5, f. 2. — 

 Reeve, Conchol. Iconica, Cardium, pi. 6, f. 34. 



„ miccronahtm, PoLi, Test. Sicil. vol. i. pi. 17, f. 7, 8. 



„ sjnnostim, Sowerby, British Miscellany, pi. 32. — Linn. Trans, vol. viii. 

 p. 63. 



The general form is suborbicular, and very slightly heart- 

 shaped, exhibiting a trifling degree of obliquity, and be- 



