OF NEW SOUTH WALES. 105 



spirally granulated, suture channeled, crenulated,* below small 

 minute holes, having raised like callus at their edge, periphery 

 with small keel, divided and crenulated, base convex, more rugose 

 than upper surface, umbilicus rounded, small, and deep, minute 

 holes round the edge, aperture oblique, nearly circular, peristome 

 thin, margins continuous, with thin deposit of callus on the body 

 whorl ; columellar margin slightly reflected over the umbilicus. 



Diam. Maj. 3f, min. 3|, alt. 4 lin. 



Hab. Yule Island, New Guinea. 



17. — Helix (Hadra) Palmensis. 



Shell umbilicated, globosely turbinated, finely striated, the 

 whole surface marked with minute zig-zag and lengthened grains, 

 giving the shell a granulated appearance, reddish yellow, with 

 numerous spiral chestnut lines and bands, very dark at the 

 mouth, whorls 6, slightly convex, the last convex above, deflected 

 in front, suture crenulated and encircled with a dark blackish 

 band ; spire conical, apex obtuse, base rounded, marked as above, 

 having coarser lines entering the umbilicus, with a dark broad 

 band round it, aperture somewhat diagonal, ovately lunate, within 

 shining livid hue, peristome blue-black, thick, and broadly 

 expanded and reflected, margins approximating, the right 

 descending at the upper part, and connected by a thin callus ; 

 columellar margin very much thickened and expanded half over 

 the umbilicus. 



Variety. Yellowish, with one band one line wide on the peri- 

 phery, running spirally to the apex, with another broad one at 

 the suture, nearly obsolete on the second whorl, peristome lightish 

 brown, very dark behind, dark reddish brown round the 

 umbilicus. 



Diam. Maj. 23, min. 18, alt. 17 lines. 



Hab. Palm Island, North-east Australia ; found under stones 

 and rocks in the thick jungle. 



18. — Helix (Geotrochus) Yulensis. 

 Shell imperforated, conic, trochus shaped, rather thin, obliquely 

 finely striated and obsoletely granulated ; whitish, ornamented 



