51 G trochidjE. 



distinctness. The only specimen of the shell taken was in 

 the cabinet of Mr. M'Andrew, but unfortunately has been 

 accidentally destroyed. 



Abundant everywhere all round our shores, inhabiting 

 for the most part the coraline zone, but occasionally rang- 

 ing- from seven to as deep as sixty or even eighty fathoms. 

 It ranges throughout the western seas of Europe, and is 

 found fossil in the red crag. 



T. cinerarium, Limioeus. 



Whorls flattish, with coarse raised spiral stride, arid fine linear 

 iron-grey markings on an ash-coloured ground ; axis with a 

 rather narrow perforation. 



Plate LXV. fig. 1, 2, 3, and (Animal) Plate D D, fig. 1, and 1 a. 



Lister, Hist. Conch, pi. G41, f. 31. 

 Trochus cinerarius, Linn, (not Born) Syst. Nat. ed. 12, p. 1229. — Donov. Brit. 



Shells, vol. iii. pi. 74, top and bot. figs. — Mont. Test. Brit. 



p. 284. — Tl'rt. Conch. Diction, p. 187. — Flem. Brit. 



Anim. p. 322. —Forbes, Malac. Monens. p. 23 (animal). — 



Johnst. Berwick, Club, vol. i. p. 264. — Macgill. Moll. 



Aberd. p. 133 (chiefly).— Brit. Marine Conch, p. 161.— 



Brown, 111. Conch. G. B. p. 18, pi. 11, f. 5, 8.— Muller, 



Zool. Danic. pi. 102, f. 1 to 4. — Chemn. Conch. Cab. vol. v. 



p. 117, pi. 171, f. 1686.— Dill. Recent Shells, vol. ii. p. 



779.— Wood, Index Test. pi. 29, f. 49.— Lam. Anim. s. 



Vert. (ed. Desh.) vol. ix. p. 149. — Gevens, Conch. Cab. 



ed. 2, pi. 12, f. 119, 120.— Hanl. Young Conch, p. 70.— 



Loven, Index Moll. Scand. p. 20. 

 „ lineutus, Da Costa, Brit. Conch, p. 43, pi. 3, f. 6. — Pulteney, Hut- 

 chins, Hist. Dorset, p. 44. — Maton and Rack. Trans. Linn. 



Soc. vol. viii. p. 153. — Rack. Dorset Catalog, p. 48, pi. 16, 



f. 11, 12. 

 „ perforatus, Smith, Mem. Werner. Soc. vol. viii. p. 99, pi. 1, f. 3, 4. — 



Brit. Marine Conch, p. 161. — Brown, Illust. Conch. G. B. 



p. 18, pi. 57, f. 9, 10. 

 „ influtus, Blainville, Faune Franc,. Moll. p. 275, pi. 1 1 , f. 5 (probably). 

 „ lineolatus, Potiez and Mich. Gal. Douai, Moll. vol. i. p. 334, pi. 30, 



f. 8, 9. 

 „ littoralis, Brown, Illust. Conch. G. B. p. 18, pi. 11, f. 1,4. 

 „ electissimus, Bean, Brit. Marine Conch, p. 264. 



