431 



fix, furnifhed with ftrong, regular, clore-fet, longitu- 

 dinal ftrias: on the upper part of the body whirl is ufu- 

 ally a brown belt, which continues up the lower part of 

 the fuperior volutions : at the bafe of the fhell are gene- 

 rally feveral fmall circular bands ; thefe are frequently 

 interrupted or broken, and appear fpotted. Sometimes 

 the hvov^n fa fcice run into each other, and are elegantly 

 fpotted with white : aperture lunated ; lip thin, not re- 

 flecled : umbilicus moderately large and deep. Diame- 

 ter at the bafe commonly three-eighths of an inch, rarely 

 half an inch ; height about a quarter. 



This fpecies is fubje6l to great variety in markings; 

 fome are dark-brown with a fingle white belt on the body, 

 and minutely fpotted with wrhite: others are cinereous- 

 brown, or grey; but in moft, fome fiiint appearance of 

 fafcics are to be traced, and mofl commonly the white 

 band round the middle of the body volution : the apex 

 is of a dark colour. In (hape it is a medium between 

 \}(\& Hdix virgata ^.vi^ radiata; is not fo produced as 

 the former, nor fo flat as the latter; in the bands, or 

 Jafcioe at the bafe, it fomewhat refembles the firft, and 

 in being ftrongly ftriated, is like the laft. 



4 



The umhilicus is much lefs than in the radiata, al- 

 though the fhell is much fuperior in lize. 



It is a local fpecies, and feems to affeft dry fituations. 



We 



