AUSTRALIAN LAND SHELLS. 55 



rous spiral lines and yellow bands of reddish-chestnut and black ; 

 spire convexly-conoid ; whorls 6, slightly convex, last rounded, 

 rather suddenly deflected in front ; mouth diagonally ovately -lunate, 

 white within, shewing the bands ; peristome straight, slightly 

 thickened, moderately expanded, but scarcely reflected, margins 

 slightly approximating, columellar margin purplish and triangularly 

 dilated above, reflected, and nearly covering the umbilicus. 

 Diameter, greatest 1-25 ; least POO ; height 0-70 of an inch. 



Habitat. Ipswich, Port Curtis, Port Denison, Gape Upstart, Upper 

 Maiy and Upper Dawson Rivers, and other localities in Queens- 

 land. Cox. 



The description applies to the most prevalent form of the shell as 

 figured. It is, however, subject to considerable variation. In some 

 localities it becomes much larger and more solid than usual, when it 

 corresponds with the description of Pfeiffer, iron. Hel. Yiv., Vol. I., 

 p. 329, and resembles the figures of Peeve, who also gives a 

 variety of uniform fulvous-brown, without bands. There is another 

 curious one, which Pfeiffer calls var p., and of which I possess speci- 

 mens, chestnut, with the bands indistinct, and the last whorl yellow 

 at the base. Plate XVIII. , Pig 1, represents a large thin variety 

 numerously and finely banded, from Wide Bay. In fact, among its 

 variations there are some so closely connecting it with H. Lessoni as 

 to render it difficult to separate them. On the other hand, its 

 affinities with H. Yulei are very obvious. 



139. Helix Lessoni. Pfr. Plate IV. Fig 10. M.C. 



Pfr., tiymbolce, Vol. III., p. 71. 



Helix gulosa. Gould, Exped. Shells, 1846, p. 17, according to Pfeiffer. 



Peeve, Cone. Icon. sp. 754. 



H. seminigra. Crosse, Journ. de Conchyl, 1864, p. 289. 



Shell perforated, globular, very finely closely striated, rather solid, 

 blackish-chestnut, pale towards the apex, and sometimes spirally 

 lined ; spire obtusely-conical or nearly convex, suture pale ; whorls 

 6, slightly convex, last inflated, deflected in front ; base convex, 

 frequently shewing traces of spiral lines and bands, especially 

 within the mouth ; aperture diagonal, roundly to ovately-lunate, 

 of a shining bvid hue within ; peristome expanded throughout, 

 rather thickened, white, mai'gins slightly approaching, columellar 

 ' margin above dilated and reflected, so as partially, sometimes 

 almost entirely, to cover the umbilicus. 



Diameter, greatest 1*45; least 1*30; height POO of an inch. 



Habitat. Port Curtis, Queensland. Cox. 



A variable shell, usually to be recognised at once among its allies by 

 its comparatively small size, the dimensions given above are from an 

 unusually large specimen, its dark, nearly black, unhanded lower 

 portion, and its pale narrowly banded spire, and white lip. Some 

 small specimens of H. appendiculata approach it very closely. I 

 have not the slightest hesitation in referring II. seminigra of Crosse 

 to this species. It is scarcely even a variety. Specimens from 



