CANTHARIDUS. 423 



Genus TURCICA, H. and A. Adams. 



Shell conoidal, thin, sub-diaphanous, imperforate ; 

 whorls with transverse rows of granules, the last rounded 

 at the periphery ; columella thick, spirally twisted pos- 

 teriorly, ending antei'iorly in an obtuse, prominent point ; 

 outer lip thin, simple, acute. 



Ex. T. monilifera, A. Adams, pi. 48, fig. 3. 



This genus is founded on a beautiful trochoid shell 

 from Australia, having somewhat the aspect of Zizi- 

 phini/s, with the whorls shining with a golden nacre and 

 ornamented with transverse series of granules. The 

 chief peculiarity of the genus consists in the spirally-con- 

 torted columella. 



Genus CANTHARIDUS, Montfort. 



Shell thin, ovately conoidal, axis imperforate, whorls 

 striated or rugose ; aperture sub-tetragonal, longer than 

 wide, iridescent within ; columella rather straight, simple, 

 ending anteriorly in a simple point; outer lip thin. 



Si/n. Cantharis, F^rns,, not Bolt. Cantharius, Voight. 



Ex. C. iris, Humphrey, pi. 48, fig. 4. 



The shells of CantJiaridun are ovate and thin, the outer 

 lip is acute, and the columella wants the conspicuous 

 tooth seen in Elenchus ; the whorls, moreover, are not 

 polished, as in that genus, but are usually transversely 

 striated. 



Species of Cantharidus. 



articularis, A. Adamn. cingulifer, A. Adanift. 



artizona, A. Adams. iris, Humph. 



