AUSTRALIAN LAND SHELLS. 23 



58. Helix Le Grandi. Cox. Plate XII. Fig. 7, natural size and 

 magnified. Australian Museum. 



Shell openly umbilicated, depressly-orbicular, rather irregularly, 

 closely, and sharply striated, reddish-brown ; spire flat, but not 

 excavated in the centre ; suture impressed ; whorls 41 flattened and 

 slanting towards the suture, last tumid, not descending in front ; 

 umbilicus widely open, freely exposing the whorls ; aperture round, 

 lips simple, thin, margins closely approaching, columellar margin 

 not reflected at the base. 



Diameter, greatest 0-13 ; least 0-12 ; height 0-07 of an inch. 



Habitat. Mount Wellington, Tasmania. Masters. 



Closely allied to, and resembling H. iuloidea. 



59- Helix similis- Cox. Plate XII. Fig. 12, natural size and 

 magnified. Australian Museum. 



Shell deeply and perspectively umbilicated, discoid, spire depressed, 

 chestnut-brown, not shining, regularly and finely ribbed on the 

 uj)per and under surface ; whorls 4^, rounded, last whorl descending 

 a Little in front, suture deep and narrow ; peristome simple, thin ; 

 aperture round, margins closely approximating, columellar margin 

 not reflected at the base. 



Diameter, greatest 0'08 ; least - 07 ; height 0-04 of an inch. 



Habitat. Mount Wellington, Tasmania. Masters. 



60. Helix Murphyi. Cox. M.C. 



Cox, Catalogue of Australian Land Shells, p. 37, 1864. 



Shell openly umbilicated, depressed, reddish-horny, slightly shining, 

 closely and obliquely elevately ribbed and under the lens, decus- 

 sately striated ; whorls 5, rather plainly convex, the last sharply 

 keeled, spire obtuse ; aperture moderately oblique, triangularly 

 ovate ; peristome simple and sharp. 



Diameter, greatest 018 ; least 0'16 ; height 0-09 of an inch, 



Habitat. AVollongong, under stones. Masters. 



IX. SECTION ANGASELLA. Adams. 



* H. cyrtopleura. 



61. Helix cyrtopleura. Pfr. Plate IX. Fig. 13, 13a., copied 

 from Joum. de Conehyl. 



Pfr., Joum. de Conehyl, 1862, p. 227. PI. X. Fig. 1. 



Shell rather widely umbilicated, depressed, shaped like a Planorbis, 

 rather solid, with veiw close arcuate thread-like ribs, whitish ; spire 

 flat ; whorls 4 or 4--, scarcely convex, last more convex, almost 

 rounded, not descending in front ; aperture oblique, lunately-sub- 

 circular, shining within ; peristome white, callous, margins con- 

 verging, right shortly expanded, basal slightly reflected. 



Diameter, greatest 0-70 ; least - 57 ; height 025 of an inch. 



Habitat. Plains in the neighbourhood of I ake Torrens, South Aus- 

 tralia. Angus. 



