AUSTRALIAN LAND SHELLS. 41 



growth, having finer strife between, and decussated with still fainter 

 concentric and oblique rugose stria?, covered with reddish-yellowish, 

 or greenish-brown epidermis, generally streaked with brown ; spire 

 very short, obtuse ; suture indistinctly crenulated ; whorls 5 to 

 5A-, convex, rapidly increasing, the last inflated, shortly deflected 

 anteriorly; aperture nearly diagonal, irregularly Innately-rounded ; 

 peristome white, thickened, slightly reflected, especially at the base, 

 columellar margin expanded, hollowed, nearly straight within, and 

 forming an obsolete broad tooth, externally spread over the um- 

 bilicus, edges connected by a callus. 

 Diameter, greatest 1'80; least l'oO; height 1*30 of an inch. 



Habitat. Facing Isle, Port Curtis, Dunk Isle, Cape Upstart, and Wide 

 Bay. MacGillivrag. Port Denison and Rockhampton, Queens- 

 land. Cox. 



A more ponderous shell than the preceding, which seems peculiar to 

 N.W. Australia, while the present ranges along the whole of the 

 N.E. coast. It is also distinguished by having transverse striae, and 

 being quite imperforate. I have a very remarkable variety of this 

 species from Miriam Vale, Port Curtis, it is very thin, greenish-olive, 

 and of very small size ; a small mature specimen, the margins of the 

 mouth of which are joined by a callus, measuring not more than 0*95, 

 0-80, and 60 of an inch. 



105. Helix pachystyloides. Cox. Plate V. Fig. 4. M.C. 



Shell narrowly and deeply umbilicated, globular, somewhat solid, 

 horny-yellow, rather glossy ; the light wrinkled lines of growth de- 

 cussated with irregular wrinkles, very closely set together ; spire 

 short, obtuse ; suture irregularly crenulated ; whorls 5, convex, 

 rapidly increasing, last very large, inflated below ; aperture nearly 

 diagonal, irregularly roundly-lunate ; margins slightly approaching, 

 and connected by a thin callus, white lipped, livid within ; peristome 

 flesh-coloured, uniformly curved, expanded outwardly, more so in 

 front, and on the columellar margin, which is dilated above, some- 

 what callus within and outwardly partially concealing the umbilicus. 



Diameter, greatest 1 20 ; least 1*00; height 0*85 of an inch. 



Habitat. Cape York. Darnel. 



Varies considerably in solidity, being sometimes even delicate, thin 

 and horny, it is then most nearly allied to the very small, but ex- 

 umbilicated variety of H. pachystgla alluded to. 



106. Helix ieptogramma. Pfr. Plate XL Fig. 4, copied 

 from Reeve. 



Pfr., Pro. Zool. Soc, 1845, p. 127. 

 Reeve, Cone. Icon. sp. 437. 



Shell umbilicated, globose, thin, striated, with close-set concentric, 

 impressed lines, fleshy- white, with three or four narrow red bands ; 

 whorls 4 i-, rather convex, last inflated, shortly descending in front ; 

 aperture scai'cely oblique, roundly-lunate ; peristome white, simple, 

 shortly expanded, margins joined with a diffused very thin callus, 



