102 THE PROCEEDINGS OF THE LINNEAN SOCIETY 



thin, acute, margins distant, columellar margin slightly dilated, 

 covering half the umbilicus. 



Diam. Maj. 2\, min. 1|, alt. 2 lin. 



Hah. Darnley Island, Torres Straits ; found on the leaves of 

 trees on the most elevated peak of the Island. 



The upper half of this species is of a light brown, the lower half 

 pale yellowish horn, having the peculiar minute spiral decussating 

 lines giving a fenestrated appearance to the shell. 



9. — Helix (Conulus) Darnleyensis. 



Shell imperforated, globosely conical, thin, hyaline, pale horny, 

 faintly marked with silky strise, rather oblique, whorls 4, roundly 

 convex, the upper one spirally sculptured with fine lines, the last 

 large and inflated, suture deeply impressed, spire conoid, apex 

 obtuse, periphery rounded, base convex, mai'ked with spiral lines, 

 aperture oblique, somewhat ovate, peristome simple, thin, margins 

 distant, columellar rather straight with a thin reflected plate on the 

 imperfo ration. 



Diam. Maj. '2 J, min. 2, alt. 2 lin. 



Hub. Darnley Island, Torres Straits ; found on trees. 



10. — Helix (Conulus) Barnardensis. 



Shell minutely umbilicated, turtunately globose, thin, white, 

 transparent, regularly minutely finely striated, whorls 4, convex, 

 spire conoid, apex obtuse, slightly keeled at the periphery ; base 

 convexly rounded, smoother than above, aperture vertical, some- 

 what squarely ovate, margins distant, the columellar margin dilated 

 and reflected covering one-fourth of the umbilicus. 



Diam. Maj. 1, min. f, alt. 1, lin. 



Hob. Barnard Islands, No. 3, North-east Coast of Australia. 



11. — Helix (Conulus) Nepeanensis. 



Shell minutely umbilicated, tui-binately depressed, thin, yellowish 

 brown, coarsely obliquely striated, whorls 5, convex, the last large, 

 suture distinct, spire conoid, apex obtuse, small minute callus-like 

 keel at the periphery ; base rounded, marked with fine striae, 

 aperture diagonal, roundly lunar, peristome thin, simple, margins 

 distant, columellar margin rather thickened and slightly reflected. 



