AUSTRALIAN LAND SHELLS. 11 



increasing, convex, narrow, last whorl a little descending in front, 

 suture strongly impressed ; spire flat ; excavated round the um- 

 bilicus ; mouth lunately-rounded, lip simple, thin, not reflected at 

 the columella. 



Diameter, greatest - 07 ; least 0'06 ; height 0-03 of an inch. 

 Habitat. Mount "Wellington, Tasmania. Masters. 



24. Helix albumenoidea. Cox. Plate XII. Fig. 2, natural size 

 and magnified. Australian Museum. 



Shell umbilicated, flattened, thin, opalescent, opacpie, bluish-white, 

 resembling coagulated albumen, smooth, dull, not shining ; spire 

 scarcely elevated ; suture impressed, margined ; whorls 4i to 5, 

 smoothly rounded, last not descending in front, the last two whorls 

 of a uniform diameter ; base convex, of a uniform colour and aspect, 

 with upper surface ; umbilicus deep, narrow, slightly excavated 

 round about ; aperture diagonal, ovately rounded ; peristome 

 simple, blunt, margins slightly converging, columella dilated at its 

 insertion. 



Diameter, greatest 0*20 ; least 0*16 ; height - 10 of an inch. 



Habitat. Flinder's Range, South Australia. Masters. 



25. Helix fricata. Gould. 



Nanina fricata. Gould, Expedition Shells, 1851, p. 32. 

 Reeve, Gone. Icon. sp. 1033. 



Shell rotate, thin, greenish-horny, above slightly convex, sculptured 

 above with frequent radiating threads, sometimes forked, beneath 

 very smooth ; umbilicus wide, deep, funnel-shaped ; whorls 4 ; 

 suture impressed ; aperture rounded ; lip simple. 



Diameter 7- 10th ; axis % of a line. 



Habitat. Illawarra, New South Wales. Drayton. 



The above is entirely taken from Gould's original description, as 

 quoted by Pfeiffer, in Mon. BZel. Viv., Vol. III., p. 93. I doubt 

 whether Peeve' s figure is intended for the shell of Gould, as the 

 former speaks of "the two characteristic red lines," not at all 

 alluded to by the other. 



26. Helix Lyndhurstensis. Cox. Plate XVII. Fig. i natiiral 



size, la., lb. much magnified. Museum, P. L. King. 



Shell largely and openly umbiheated, pellucid, rotundately depressed, 

 obsoletely striated, smooth, shining ; spire obtusely convex, brown- 

 ish ; whorls 4 to 5, the last dilated ; aperture lunately-circular ; 

 peristome simple, acute. 



Diameter 0*25; height - 09 of an inch. 



Habitat. Lyndhurst, Sydney. King. 



The only specimens which I have seen of this species are in the cabinet 

 of the Rev. P. L. King, of Parramatta, by whose kindness I have 

 been enabled to figure this and many other species. 



