CANALIFERA. MOLLUSCA. PUSUS. 291 



of the lower whorl ; there are numerous inconspicuous revolving 

 lines, most distinct at the base ; larger whorl rather more than 

 half the length of the shell, with a slight shoulder at the suture ; 

 aperture short and narrow, having a slight notch at its posterior 

 angle, and terminating abruptly in front, without an elongated 

 canal ; outer lip sharp ; pillar smooth, moderately arched. 

 Length | inch, breadth ^ inch, divergence 40. 



Found, not unfrequently, in the stomachs of fishes, though 

 rarely in a fresh state. 



On comparison with specimens sent from England, I coincide with 

 Mr. Sowerby in opinion, that this shell, first found in our waters by 

 Mr. Couthouy, and described by him as new, is the Murex rufus of 

 Montagu. It is, however, generally much larger than those known to 

 Montagu, his specimens being less than half an inch in length. 



It js a well marked species, though varying much in its depth of 

 color, and in the distinctions of the spiral lines. The spaces between 

 the ribs are deep, as if grooved out. The canal is almost too short for 

 the genus Fusus, while the notch of the lip approximates it to PLEU- 

 RO'TOMA. 



FUSUS HARPULA'RIUS. 



Shell long-ovate, pointed, turreted, flesh-colored, whorls an- 

 gular above, with about sixteen oblique, rounded folds and numer- 

 ous revolving lines. 



FIGURE 191. 



State Coll., No. 21. Soc. Cab., No. 2375. 



Fusus harpulkrius, Couxnouy ; Bost. Journ. Nat. Hist., ii. 106, pi. 1, f. 10. 



Shell ovate-oblong, turreted, of a brownish flesh-color, com- 

 posed of six or eight angulated whorls, flattened above the angle, 

 so as to form a slightly sloping shoulder ; lower whorl more than 

 half the length of the shell, having about eighteen oblique, rounded 

 plaits or ribs, vanishing before they reach the beak, and crossed 

 by fine revolving lines, most conspicuous in the interstices ; the 

 upper whorls are marked in the same manner ; beak white, short, 

 somewhat curved, and pointed ; aperture narrow, broadest and 

 angular behind ; the outer lip sharp ; inner lip white, smooth, and 



