24 BOOK or SPECIES. 



H. HORTENSis. Differs from the last by 

 the whiteness of its margination. B. Diam. |. 

 T. 24. 



H. piSANA. Globose and depressed, per- 

 forated, thin, whitish, and painted with inter- 

 rupted yellowish and brown bands ; lip simple ; 

 inner margin pink. B. J . o . i. T. 3] . 



H. ERicETORUM. Orbicular-depressed, um- 

 bilication shewing the whole of the whorls, 

 slightly striated, whitish, with brown bands ; lip 

 simple, f . . . |. T. 3/. 



H. CARTHUSIANELLA. Orbicular - convex, 

 depressed, perforated, smooth, pellucid, whitish 

 horn-colour, obscurely banded ; lip with its inner 

 margin brown, its outer white and sub-reflected ; 

 diam. |. B. T. 26. 



H. CARTHUSiANA. Orbiculat-convcx, de- 

 pressed, perforated, smooth, pellucid, white or 

 grey ; spire short ; margin of lip sub-reflected ; 

 diam. 1. B. T. 27- 



H. CELL ARIA. Umbilicated, slightly striated, 

 pellucid, glossy, with five depressed yellowish 

 whorls; base white; lip simple, acute; diam. /g- 

 B. T. 40. 



H.NiTiDA. Flattened, orbicular, umbilicated, 

 thin, pellucid, minutely striated, brownish horn- 

 colour ; lip simple, acute ; diam. i. B. T. 38. 



H. HISPID A. Convexly orbicular, sub-de- 



