HELIX. 25 



pressed^, umbilicated, pellucid, brownish horn- 

 colour, covered with minute bristles; lip thin, 

 sub-reflected. B. small. T. 41. 



H. ROTUND ATA. Flattisli orbicular, rather 

 convex, widely umbilicated, deeply striated, grey 

 or reddish; spire peculiarly obtuse; lip simple. 

 This shell is generally rayed with a darker colour. 

 B. very small. T. 44. 



H. PULCHELLA. Miuutc, umbilicatcd, white 

 or ash-colour, depressed, equally convex on both 

 sides ; aperture nearly circular, with the margin 

 flat and reflected. B. T. 49. 



H. ACULEATA. Miuutc, couic, brown horn- 

 colour, with the suture deep ; the epidermis rising 

 into thin spinous foliations ; aperture semi-ellip- 

 tic. B. T. 33. 



H. GLABELLA. Sub-dcprcsscd, perforated, 

 smooth, horn-colour; aperture semi-lunate, round; 

 lip sub-marginated ; last whorl sub-carinated, con- 

 vex, and marked with an obsolete white band upon 

 the keel. Small. B. T. 28. 



H. SERiCEA. Sub - depressed, horny, and 

 brownish, thin, fragile, pellucid, perforated, hairy, 

 and last whorl carinated ; aperture extremely 

 small, semi-lunar, simple. B. small. T. 29. 



H. PYGMEA. Depressed, umbilicated, most 

 finely striated, above rather convex, immaculate, 

 brownish horn-colour, with four rounded whorls ; 

 c 



