2 AUSTRALIAN LAND SHELLS. 



L SECTION XESTA. Pfr. Vees. p. 120. 



* H. villans. * H. circumcincta. * H. rustica. 



* H. Waterhousei. * H. mierocosmos. 



1. Helix villaris. Pfr. Plate X. Fig. 8, natural size and 

 magnified. M.C. 

 Pfr.,' Pro. Zool. Soc, 1854, p. 146. 



Peeve, Cone. Icon. sp. 1375. 



Helix Kreffti. Cox, Catalogue of Australian Land Shells, 1864, p. 21. 



Shell perforated, orbicular, depressed, thin, pellucid, smooth, with 

 microscopic strife, very glossy, reddish -yellow ; spire broadly convex ; 

 whorls 5, slightly convex, suture slightly margined, last rounded at 

 the periphery, less convex at the base ; under surface flesh coloured 

 and opaque' about the very minute umbilicus ; aperture diagonal, 

 lunate, slightly pearly within ; peristome simple, thin, straight, the 

 columellar margin rather sloping, thickened above, with a callus 

 inwardly, and very slightly reflected outwardly. 



Diameter, greatest 0-50 ; least 0-50 ; height 0-25 of an inch. 



Habitat. Cape York. Cox. Eocky Isles, near Cape Flattery. 

 MacGillivray. 



I cannot venture to keep the shell formerly named by me R. Kreffti 

 distinct from H. villaris of Pfeifler, whose description is quite satis- 

 factory ; while that of Eeeve is less so. A remarkably polished, 

 shining, oily-looking shell of a rich honey colour, with the columella 

 white and callous within. 



2. Helix rustica. Pfr. Plate IX. Fig. 3 natural size, 3 a. 

 magnified. M.C. 

 Pfr., in Zeit-schrift fur. Malac., 1852, p. 112. 



Helix inconspicua. Forbes, Voy. Rattlesnake, Vol. II., p. 379. Plate 



II. Fig. 3. 

 Helix impexa. Reeve, Cone. Icon. sp. 795. 

 Helix Crotali. Cox, Catalogue of Australian Land Shells, 1864, p. 18. 



Shell minutely perforated, depress^ -convex, thin, smooth, rather 

 glossy, very faintly striated, pale horny ; spire very short, obtusely 

 conical, suture shallow, slightly margined ; whorls 5, regularly in- 

 creasing, rather flattened, last convex, slightly flattened above, not 

 continued in front ; aperture diagonal, lunate ; peristome simple, 

 acute, regular, columellar margin slightly expanded, and reflected 

 above. 



Diameter, greatest 0-30 ; least 0-27 ; height 0'15 of an inch. 



Habitat. "Low Islands" in Trinity Bay, and Howick Isle, No. I. 

 MacGillivray. Flinders Eange, South Australia. Angas. Eapid 

 Bay, South Australia. Masters. 



I have taken the description from five specimens presented to the 

 Australian Museum by the original collector, and from the precise 

 locality whence Forbe's specimens were derived. They are much 

 duller than specimens from other places, which those in the Cumin- 

 gian collection, described by Pfeifler and Eeeve, undoubtedly were, 

 as they are usually more glossy, and varying in colour being white 

 and crystalline, pale, yellowish horny, or of a reddish tint. The 



