183 
cancellate shells, (I mean the true Pyrulse,,') with a very short spire, 
and pyriform, having the greatest diameter above the middle. 
But as Buccinurrij in another family, is at present constituted, 
Fv,sus is allied artificially even to that genus. 
The species are numerous, and are marine. Lamarck enumer- 
ates thirty-seven recent and thirty-six fossil species ; hut we are in- 
formed that Defrance makes the number of fossil species amount 
to sixty-six. 
Fusus CORNEUS. — Specific character. Fusiform, unarmed, 
transversely striated ) beak rather short, recurved. 
Murex corneus. Linn. Syst. Nat. p. 1224. Penant, Zool. vol. 
4, p. \24ij pi. 76. Donovan^ Nat. Hist. Brit. Shells^ vol. 2^ pi. 38. 
Mont. Test. Brit. p. 158. (^Dillwyn.') 
Fusus islandicus. Martini Conch, vol. 4, p. 159, yi?. 141, (^Dill- 
7vyn.') 
Murex islandicus. Gmel, Schrehers, (JDillwyri) &c. — Lister 
Conch, pi. 913, fig. 5 
Desc . — Shell turrited-fusiform ; the greatest dilatation a little 
below the middle ; unarmed : whorls about eight, convex, trans- 
versely striated and longitudinally a little wrinkled : epidermis 
pale brownish, deciduous : spire tapering, nearly as long as the 
aperture and beak, terminating obtusely : labrum simple, smooth 
within : columella naked, simple : beak of moderate length, slightly 
arquated and a little recurved. 
This is one of the several species of shells, which inhabit the 
northern shores of America, in common with the coast of Europe, 
and particularly that of Great Britain, as well as Iceland. The 
late Mr. Z. Collins, a zealous and enlightened naturalist, presented 
to me an individual which he found on the coast of New Jersey. 
The color is whitish, but when living, it is covered with a brown- 
ish deciduous epidermis. 
Although the name icelandicus has been adopted by Lamarck 
and other distinguished conchologists, yet with Pennant, Dillwyn 
and others, I have retained the Linnaean name, for the all- 
sufficient reason, that it has the priority ; whilst, at the same time, 
it has the advantage of being preferable in itself, as the shell is 
not limited to Iceland. 
The resemblance between this shell and the antiquus, L., has 
been noticed by many writers ; but that species is much larger, 
