CANALIFERA. MOLLUSCA. FUSUS. 293 



sharp, or thickened by a rib ; inner hp smooth, slightly arched. 

 Length | inch, breadth \ inch, divergence 42^. 



Found in considerable numbers, and in a very fresh state, in 

 the stomachs of fish. It is one of the shells common to both At- 

 lantic shores. 



This is a very pretty shell, and is not likely to be confounded with 

 any other except F. harpularius. From this it is distinguished by 

 beino- a more delicate shell, by its color, by the smaller number of 

 ribs, and by the remarkably turreted appearance of the whorls. The 

 raised line, revolving at their angle, is so great as to produce a small 

 tubercle there, on each of the ribs. The aperture is usually about 

 half the length of the shell ; but there is a variety in which the aper- 

 ture is about one third the length of the shell, and the ribs are more 

 numerous. Mr. Sowerby intimates that our shell may not be identical 

 with the European type ; but on the whole, I cannot persuade myself 

 to regard them as different. The variety is like the Murex angulatus, 

 figured by Donovan. 



Fusus murica'tus. 



Shell slender^ yellowish; whorls very tumid, with about ten 

 conspicuous folds and elevated revolving lines ; beak long and 

 straight. 



State Coll., No. 14. Soc. Cab., No. 2377. 



Murex muricatus, Montagu ; Test. Brit., 2G2, pi. 9,f. 2. Tukton ; Conch. Diet., 

 95. Maton and Rackett ; Lin. Trans., viii. 149. Dii,lwyn; Catal., 74(j. 

 Wood ; Index, pi. 27, f. 136. Fleming ; Brit. Jinim., 351. 



Fusus muricitus, Brown; Conch, of Great Brit., <^c.,48, f. 28. 



Shell elongated, slender, yellowish-white, or orange, composed 

 of seven very convex whorls, the suture deeply defined, forming 

 an elevated, pointed spire ; these are traversed by about ten 

 broad, rounded folds or undulations which are crossed by coarse, 

 elevated, revolving, glossy lines, producing a rough, granulated, 

 almost tubercular surface ; aperture broad oval, terminating in a 

 long, straight canal, which together equal half the length of the 

 shell ; outer lip rendered jagged by the revolving lines, and some- 

 times greatly thickened ; inner margin smooth and simple. Length 

 -j.\ inch, breadth -j?^ inch, divergence 45°. 



