varieties ; particularly the Ammiralis Jummus, A. oc^ 

 cidentalisy and above all the fuperb variety, if not 

 diftind fpecies, known by the title of Cedo nulliy of 

 which a fpecimen has been fometimes valued at the 

 price of an hundred guineas. The prefent fpecies, 

 though not comparable either in point of beauty or 

 rarity to many others, is yet pofleffed of a very high 

 degree of elegance. It is a native of the American 

 ocean. 



It {hould be obferved that this genus, before the 

 Syftema Naturje of LinniEus made its appearance, 

 was difbinguifhed by the name of Voluta or Volute ; 

 but Linn2eus, with greater propriety, has applied 

 the title of Conm ; the outline of the fhell, in moft 

 fpecies, approaching very nearly to the mathemati-^ 

 cal figure of a cone. 



