Fusus. 371 



probably prove to belong to the genus Pollia of Gray. Mr. Say's 

 specific name is preoccupied by anotlier species of Buccinum. 



Family MURICID.E, Flem. 



Shell with a canal, more or less extended, in front of the aper- 

 ture, the outer lip of which does not alter its form by age. 



OOBiiis FUSUS, Lamarck. 1799. 



Shell elongated, taperhig to both ends, without varices ; aper- 

 ture oval, terminating in a straight or sliglitly curved canal ; opercu- 

 lum horny, pear-shaped, with the nucleus at the small end. 



Fusus Islandicus. 



Shell elonp^ated, bluisli-wliite, covered with a horn colored epidermis ; whorls 

 eight, marked with equidistant, revolving lines ; aperture as long as the spire. 



Murex Cornells, Pennant, Brit. Zool. iv. 124, t. 76, fig 99. — Montagu, Test. Brit. 2.58. 

 — Donovan, Brit. Shells, ii. pi. .38. — Tcuton, Conch. Diet. 89. — Dillwyn, 

 Catai. ii. 7.33. — Wood, Index, pi. 27, fig. 107. 



Miirex Islandicns, G.melin, Syst. S.^S-i. ^ 



Fusus Islandicus, Martini, Conch, iv. 1.59, t. 141, fii,^s. 1312, 131.3. — Lam. An. san.s 

 Vert. 1st ed. vii. 126 ; 2d ed. ix. 450. — Brug. Encyc Meth. Vers. iii. 101, pi. 429, 

 fig. 2. — KiicNER, Spccii's {Fusus), pi. 7, fig. 2. — Gould, Inv. 1st cd. 284 — De 

 Kay, N. Y. Moll. 144, pi. 8, fig. 185. — Stimpson, Check Lists, 6. 



Fusus Cornells, Say, Amer. Conch, pi. 29. — Fleming, Brit. Anira. 348. — Brown, 

 Conch of Great Brit. &c. pi. 47, figs. 7, 9 ; Encyc. Brit. vi. 448. 



Baccinum graclle, D\ Costa, Brit. Conch. 124, t. 6, fig. 5. 



Buccinum aiujiistius. Lister, Conch, t. 913, fig. 5. 



Shell ovate, elongated, bluish-white, ponderous, semi-transpar- 

 ent, covered with a horn colored, somewhat velvety epidermis ; 

 whorls eight or nine, moderately convex, somewhat compressed 

 before the suture, the anterior whorl equalling two thirds the length 

 of the shell ; the whorls covered with equidistant, sub-equal raised 

 revolving lines, quite apparent through the epidermis ; lines of 

 growth faint ; suture distinct, somewhat channelled. A)ierture ob- 

 long oval, half as long as the shell, polished, porcelain-white within ; 

 outer lip sharp, and minutely crenulated by the revolving lines ; pil- 

 lar smooth, and overspread with enamel ; canal moderately pro- 

 duced, and gently curved backwards. Length, two and three fuirths 

 inches; breadth, one and one tenth inches; divergence, forty-five 

 decrees. 



