1873. J DR. J. COX ON NEW LAND AND MARINE SHELLS. 56.T 



throughout, very dark chestnut, lighter towards the apex, which is 

 ornamented with very narrow spiral bands ; spire raised, bluntly 

 conoid ; whorls 7\, convex ; margin of suture faintly lined with 

 white below ; last whorl deflexed in front, base flattened ; umbilicus 

 large, half closed by the reflexed expansion of the columellar margin ; 

 aperture ovately lunate ; margins much approximated, joined by a 

 thin purple callus ; peristome everted, of a dark livid purple, as is 

 also the interior of the aperture ; columella triangularly dilated. 



Diam., greatest 1 *6S, least 1*25 ; height T58 inch. 



Hab. Mount Elliott, near Port Denison, Queensland, North 

 Australia. 



Helix (Cam^na) challisi, sp. nov. (Plate XLVIII. fig. 3.) 



Shell solid, heavy, umbilicated, depressedly orbicular, closely finely 

 striated, of a waxy yellow colour, ornamented by six or more rather 

 narrow dark chestnut bands of irregular sizes and distances apart, 

 dark around the umbilicus ; spire moderately raised, bluntly convex ; 

 whorls 7, convex, very gradually increasing in size, last shortly 

 deflected in front ; aperture ovately lunate, margins slightly approxi- 

 mating, joined by a thin callus, interior of aperture showing dark 

 lines of ornamentation ; peristome straight, pure white, slightly 

 thickened and reflexed, columellar margin triangularly expanded, 

 half covering the rather narrow umbilicus. 



Diam., greatest 122, least 089 ; height 090 of an inch. 



Hab. L Island, Torres Straits (mus. Haryraves). 



The present adds another to the large number of species recorded 

 of the Camcena type of Australian land-shells, most of them being 

 extremely limited in their habitats, every island almost in Torres 

 Straits possessing its own special species. 



Helix (Corasia) balcombei, sp. nov. (Plate XLVIII. fig. 4.) 



Shell imperforate, depressed, almost flat above, convex below, very 

 thin, glossy, pale straw-coloured, coarsely striated above and below 

 with regular oblique transverse striae, and longitudinally with strongly 

 marked very slightly waved stria?, giving by their decussation a 

 granular appearance to the surface of the shell ; spire scarcely 

 raised, suture impressed; whorls 4, slightly convex above, rapidly 

 increasing in size ; last whorl inflated below, and very prominently 

 and sharply keeled, the keel edged with an opaque white line, base 

 rounded ; aperture large, subtrapezoidal, acutely angled at the peri- 

 phery ; peristome slightly thickened and everted, upper margin 

 attached to the carina of the last whorl ; columella dilated, ap- 

 pressed, and indented over the umbilical region. 



Diam., greatest T09, least 0"78 ; height - 48 of an inch. 



Hab. Solomon Islands (mm. Haryraves). 



This species appears to be closely allied to H. (Caracolla) papy- 

 racea, Brod. 



Helix leei, sp. nov. (Plate XLVIII. figs. 5, 5a.) 

 Shell with a large, open, funnel-shaped umbilicus, thin, trans- 

 lucent, globosely depressed, of a dark cinnamon-brown colour, 



