HELIX-HADRA. 175 



This beautiful shell is very thin ; the granulations on its surface 

 :are distinctly seen with the naked eye ; some run straight, some ob- 

 lique or zigzag. The sculpture can only be compared to a fine 

 double cross-cut file. The species is allied in color to H. bipartite 

 Fer. (Brazier.') 



H. BEBIAS Brazier. PI. 47, fig. 88. 



Shell umbilicated, depressedly-globose, thin, obliquely finely gran- 

 ulated, fulvous, ornamented with one rather broad chestnut band, 

 on the center contiguous to the suture, above the center two thread 

 like lines ; suture dark lined, crenulated ; spire sub-conoid, rather 

 obtuse at the apex ; whorls 5?, rather convex, the last slightly de- 

 scending in front, rounded at the periphery, convex at the base ; um- 

 bilicus small, dark broad chestnut band encircling it; aperture 

 nearly diagonal, Innately circular ; peristome bluish brown ; mar- 

 gins approximating, columellar margin broadly reflected concealing 

 half of the umbilicus. (Brazier.) 



Alt. 10, greater diam. 17i, lesser 13 lines. 



Garden Island, Rockingham Bay, Queensland, Australia. 



H. bebias BKAZIER, Proc. Linn. Soc. N. S. Wales iii, p. 78, 1878. 



H. COOKENSIS Brazier. 



Shell umbilicated, turbinately globose, thin, finely obliquely stri- 

 ated (under a lens), rugosely granulated ; spirally banded and lin- 

 eated with deep chestnut lines and bands, spire conoid, whorls 5?, 

 moderately convex, the last large and roundly convex, base convex, 

 umbilicus deep and narrow, aperture oblique, ovately lunate, pur- 

 plish within, peristome slightly reflected ; margins approximating, 

 the right partly descending, columellar margin straight and broadly 

 expanded partly over the umbilicus; with thin coating of callus 

 Across the body whorl to the upper part of the peristome. (Brazier.) 



Alt. 19, greater diam. 16, lesser 13 lines. 



Cook Town, Endeavor River, northeast coast of Australia. 



H. TOMSONI Brazier. 



Shell umbilicated, depressedly globose, solid, surface covered with 

 lengthened granulations ; distinctly banded with spiral chestnut 

 lines and bands ; a broad one at the suture ; whorls 5, rather convex, 

 the last roundly convex, base convex, marked same as upper sur- 

 face ; having a dark broad band round the umbilicus ; aperture 

 roundly lunate, bluish white within, peristome thickened and re- 



