CANALIPERA. MOLLU8CA. FUSUS. 289 



the transverse terminations of the ribs ; right lip thickened or 

 sharp, according as it is or is not terminated by a rib ; throat 

 light chestnut-brown, like the exterior of young shells. Length 

 1} inch, breadth f inch, divergence 45. 



Of six specimens in my possession, four belong to Colonel 

 Totten, who kindly sent them to me for description, one was 

 from Dr. J. B. Forsyth of Sandwich, all of which were from 

 the Bank Fisheries ; and one was taken from a fish caught in 

 Massachusetts Bay by Mr. Couthouy. 



This shell is remarkable for its sharp, elevated ribs, as if the sur- 

 face were raised by flakes arranged like the ribs on most species of 

 Scalaria. It is very much like the Fusus Bamffius, but, on the whole, 

 I think it is different, inasmuch as we have that species with its undoubt- 

 ed characters, and the two never seem to run into each other. The 

 large figure of Donovan, (Brit. Shells, pi. 169, f. 1,) given as Murex 

 Bdmffius, represents our shell. 



It is allied to M. Magelldnicus ; and the figure in " Encyc. Meth." 

 pi. 438, f. 4, referred to as M. lyratus, Lam., bears a distant resem- 

 blance to it. 



Fusus BA'MPFIUS. 



Shell small, brownish ; whorls six, ventricose, ribbed lengthwise 

 with numerous sharp, raised plaits ; aperture rounded ; canal 

 curved. 



FIGURE 198. 

 State Coll., No. 12. Soc. Cab., No. 2369. 



Murex Bamffius, DONOVAN ; Brit. Shells, v. pi. 169, f. 2. MATOW and RACKETT ; 



Lin. Trans. ,viii. 149. MONTAGU; Test. Brit., Suppl.,117. 

 Fusus Bamffius, FLEMING ; Brit, dnim., 351. BROWN; Conch, of Great Brit., fyc., 



P 1.47,f.l. 



Shell small, light-brownish, composed of six rounded whorls, 

 forming an elevated spire ; suture deeply defined. The stages of 

 growth are distinctly marked by an expansion of the lip, so as to 

 cover the surface of the shell, lengthwise, with from fifteen to 

 twenty sharp, raised folds, of a whitish color, which become 

 rounded into brownish ribs by age ; aperture less than half the 

 length of the shell, rounded-ovate, terminating in a curved canal, 

 37 



