416 MURICIDiK. 



more fathoms, but are mainly characteristic of the coralline 

 region. 



F. IsLANDicus, Chemnitz. 



Fusiform, more or less narrow, smooth, sulcated, or flatly 

 costellated, but not geniculatedlj or nodoselj corded ; apex not 

 symmetrically coiled: outer lip thin, not expanded. 



Plate cm, fig. 1, 3, and (Animal) Plate S. S. fig. 2. 



Lister, Hist. Aniiu. Angl. pi. 3, f. 4; Hist. Conch, pi. 913, 

 f. 5. 

 Murex corncus (not of Lixn.), Penn. Brit. Zool. ed. 4, vol. iv. p. 124, pi. 7(5, 

 f. .99. — PuLTENEY, Hutchins, Hist. Dorset, p. 43. — Doxov. 

 Brit. Shells, vol. ii. pi. 38.— Mont. Test. Brit. vol. i. p. 258. 

 — jMaton and Rack. Trans. Linn. Soc. vol. viii. p. 147 (not 

 diagnosis). — Rack. Dorset Catalog, p. 47, pi. 17, f. 5. — 

 DiLLW. Recent Shells, vol. ii. p. 733. — Wood, Index Testa- 

 ceolog. pi. 27, f. 107. — Fleming, Edinb, Encyclop. pi. 203, 

 f. 7. 

 „ Islandicus, Gmelin, Syst. Nat. p. 3555. 

 Buccimim canaliculatum gracilc. Da Costa, Brit. Conch, p. 124, pi. 6, f. 5. 

 Fusus Islandicus, Chemnitz, Conch. Cab. vol. iv. p. 159, pi. 141, f. 1312, 1313. 

 — King, Ann. Nat. Hist. vol. xviii. p. 246. — Lam. Anim. 

 s. Vert. (ed. Desh.) vol. ix. p. 450. — Desh. Encjxlop. Meth. 

 Vers, vol. ii. pt. 2, p. ICO. — Hanl. Young Conch, p. 83. — 

 Gould, Invert. Massach. p. 284. — Dekav, New York Moll, 

 p. 144, pi. 8, f. 185. 

 „ antiqmis ! Crouch, Introd. Lam. Conch, pi. 17, f. 8. 

 „ corneus, Fleming, Brit. Animals, p. 348. — Forbes, Malac. Moncns. p. 26, 

 animal. — Johnston, Berwick. Club, vol. i. p. 235. — Macgil- 

 Liv. Moll. Aberd. p. 169. — Brit. Marine Conch, p. 200.— 

 Brown, Illust. Conch. G. B. p. 8, pi. G, f. 7, 9. — Say, American 

 Conch, pi. 29, larger fig. — Kiener, Coq. Vivant. Fusus, pi. 7, 

 f. 2 (apex ?) — Reeve, Conch. Icon. vol. iv. Fusus, pi. 11, f. 43. 

 „ Listeri, Jonas, Hamburgh Nat. Hist. Trans, vol. i. pi. 10, f. 13. 

 Tritonium Islandicum, Lovkn, Index Moll. Scand. p. 1 1 . — Middend. Malacozool. 

 Rossic. pt. 2, p. 144. 

 „ gracile, Loven, Index Moll. Scandin. p. 11 . 

 Fusus gracilis. Alder, Cat. Moll. Northumb. and Durh. p. 63. 

 TropJtofi gracilc, Searles Wood, Crag Mollusca, p. 46, pi. 6, f. 10, a — c. 



We arc aware that of late years the ordinary British 

 specimens of this elegant shell have been separated from the 



