172 HELIX-HADRA. 



or unrubbed specimens. Aperture light inside, showing the bands, 

 which continue to the edge of the lip. 



Alt. 24, greater diam. 33J, lesser 28 mill. 



Alt. 22 greater diam. 28, lesser 24 mill. 



Port Denison, Queensland. 



H. whartoni Cox, P. Z. S. 1871, p. 55, t. 3, f. 5, 5a. PFR. Mono- 

 graphia Hel. Viv. vii, p. 393 ; Conchyl. Cab. p. 544, t. 165, f. 1, 

 2,3. 



Thinner, more depressed than H. appendiculata, the dark bands 

 not coalescent behind the lip, peristome less expanded, and mottled 

 by the terminations of the bands, not white as it is in the species 

 named. It is a thinner, less compact shell than H. incei, and the 

 triangular expansion of the columella at the umbilicus is light 

 colored, not marked by a dark spot. H. yulei differs in having a 

 dark lip and larger umbilical dark patch. 



H. MOURILYANA Brazier. PI. 34, fig. 11. 



Shell narrowly perforated, depressedly globose, thin, finely 

 striated, spirally banded with chestnut bands varying in width ; 

 spire raised, whorls 6 to 6J, moderately convex, last descending a 

 little in front ; aperture lunate margins rather distant ; peristome 

 reflected, purplish-brown ; columellar margin thickened and ex- 

 panded over the perforation. (Brazier.} 



Alt. 12, greater diam. 18, lesser 14 lines. 



Bowen, Port Denison, Queensland. 



H. mourilyana BRAZIER, P. Z. S. 1875, p. 31, t. 4, f. 1. PFR. 

 Mon. vii. 



Compare H. yulei. 



H. YULEI Forbes. PI. 39, figs. 82, 83. 



Shell narrowly, almost covered umbilicate, globose-depressed, light 

 yellowish, spirally striped and lineated with chestnut, the more con- 

 stant and prominent bands being one just below the suture, another 

 a little above the periphery, and a well-defined and very constant 

 circular patch at the umbilicus. Lip dark brown. 



Spire convex-conoidal ; sutures superficial, edged by a inconspic- 

 uous whitish line. Whorls 6, the last descending in front. Aper- 

 ture oblique, whitish and showing the dark bands inside ; peristome 

 expanded, dark purplish-brown, dilated into a triangular plate 



