81 



merations twelve, very diftincl ; the fepta are more opaque, 

 and a little elevated : back carinated, and flightly indented 

 at the divifions of the cells : the anterior fepta run con- 

 fiderably oblique, which caufes that end to Hope much 

 from ihe back to the front, at the point of which the fyphon 

 is placed : the front margin is not carinated, but obtufely 

 rounded. Length one eighth of an inch. 



This we mud confider as fuharcuatulus, No. 735 ^^ 

 Walker, for which reafon we have transferred the above 

 references from N.fwnlituiis to this fliell ; a good fpecimen 

 of which we difcovered in the Boyjian cabinet, together with 

 a very minute one not perfedtly formed. In this laft, which 

 is quite hyaline, the concamerations are lefs numerous, and 

 the convoluted end lefs formed. With thefe were placed 

 feveral mutilated full grown fpecimens, having loft the 

 ftraight part ; the remaining convoluted portion fo exaftly 

 correfponds with fig. 66 of Walker, that we are induced to 

 confider that fliell a mwXAzted fuharcuatulus, and not (as we 

 before fufpe6led) an imperfe(5l fpecimen of our calcar. 



M. FicHTEL has given a very exa6l figure of the fmaller 

 fpecimen above mentioned, and which is equally well de- 

 i'cribed : found in Tufcany. 



Shell fpiral, opaque, brown, with three lobated volutions ; Intlatus. 

 in the firll: whirl are five extremely ventricofe articulacions ; Tab. 18, f 3. 



L anterior 



