66 AUSTRALIAN LA^ SHELLS. 



Shell imperforate, depressly-conical, solid, the lines of growth some- 

 times rather diagonally decussated, prominent and rugose, with very 

 faint lines, and the whole surface has a minutely granularly reticu- 

 lated appearance under the lens, rich chestnut, with two narrow 

 fulvous bands, one below the suture, the other on the periphery, 

 and the latter with a faint dark band above it ; spire broadly conoid, 

 obtuse at the apex; whorls oh, flatly convex, last deflected in front, 

 angled at the periphery, swollen at the mouth, and rather excavated 

 above ; base usually with a yellowish mark round the umbilical 

 region ; aperture very oblique, truncately oval ; peristome thickened, 

 lipped within, slightly expanded, callous, very daik glossy-chestnut, 

 as is the thin callus connecting the margins and the base of the 

 columella, on which, at the centre, is a long tooth-like callosity. 



Diameter, greatest 145 ; least 1-20 ; height - 80 of an inch. 



Habitat. Ash Island and Hexham, Hunter River. Scott. Bellinger and 

 Upper Clarence Rivers, N. S W. Cox. 



Rather a variable species, as may be seen by comparing the figures 

 and descriptions quoted above. Pfeiffer, Mm. Hel. Viv., Vol. IV., 

 p. 200, mentions what he calls var. /3. as being more depressed, with 

 a convexly- conoid spire, ehestmit, with one yellow band at the 

 periphery, and another in the umbilical region. Add a second yellow 

 band under the suture, and one has the type and commonest form as 

 described above. 



164. Helix Gartneriana. Pfr. Plate XL Fig n, copied from 



Reeve. 



Pfr., Pro. Zool. Soc, 1851, p. 253. 



Reeve, Cone. Icon. sp. 419. 



Shell umbilicated, cone-shaped, solid, irregularly elevatedly striated, 

 opaque, slightly shining, yellowish-flesh coloured ; spire conical, 

 apex obtuse ; suture somewhat margined ; whorls 7, convex, last 

 sub-angular at the periphery, encircled by a red line, not descending 

 in front, beneath rather flat ; umbilicus very narrow, open ; aperture 

 slightly oblique, somewhat square ; peristome white, upper margin 

 almost angularly arched, expanded, basal nearly straight, columellar 

 margin pinkish, short, vertical and reflected. 



Diameter, greatest 087 ; least - 75 ; height - 87 of an inch. 



Habitat. Port Essington. Mac G ill iv ray. 



The preceding description has been taken verbatim, except the locality, 

 from Pfeifler's lion. BZel. Viv., Vol. III., p. 220. Reeve remarks 

 that the columellar margin is stained with a characteristic purple 

 violet blotch. 



165. Helix Poiretiana. Pfr. Plate II. Fig. l. M.C. 



Pfr., Pro. Zool. Soc, 1851, p. 254. 

 Reeve, Cone. Icon. sp. 418. 

 Shell perforate, conical, rather solid, smooth, rather shining, opaque, 

 very finely obliquely striated, fleshy white, frequently irregxdarly 

 streaked with pale brown along the lines of growth ; spire very tall, 

 conical, suture impressed ; whorls 7, nearly flat, last more rounded, 



