'<^' 



1*17 



wlVeroas M. adveffus not only Jhas the middle ferles much 

 fmalkr, b;jt that thefe become lefs confpicuous after a few 

 turns, and are wholly loft in about half the length of the 

 fiiell, or on the fifth or fixth fpire ; the remaining volutions 

 polTefs only the two larger feries : the fcparating line is alfo 

 lefs diftincl in that fhell than in tuhercuhris. 



IMiirex Bamffius. Don. Br. Shells, v. t. 1()£). f. !£. Bamffius. 



Lin. Trans, viii. p. L-iQ. 



In the Britifh Shells we find a Miirex under this title, with 

 the following fpecific chara6lers : " Siiell ventricofe, white, 

 ribbed longitudinally, with acute plaits/' To this the author 

 obferves it was difcovered by Mr. Cordiner, ontheGoaft 

 o{ Bamff shire, in Scoi land; and communicated by him to 

 the late Dutchess of Portland. 



In addition to this information we are happy to add, that 

 it is by no means uncommon on fome other parts of the 

 Scoti/lj coaft, efpeciall} on that of the Frith of Forth, having 

 received feveral from two of our conchological friends, Mr. 

 II, Boys and Mr. Laskey, which they found near Dunbar. 

 By thefe fpecimens it is obferved that the younger fliells are 

 moft commonly rufous-brown, and frequently with white 

 ribs ; they are conic, with fix ventricofe volutions, termina- 

 ting in a fine apex, and the canal is rather afcending, or 

 turned to one fide : their length in general not above half 

 an inch. In this Hate of growth the ribs are very thin and 



acute. 



