16 AUSTRALIAN LAND SHELLS. 



of the diameter; aperture roundly-lunate, slightly oblique ; peris- 

 tome thin, simple, the margins converging and joined by a thin 

 callus. 



Diameter, greatest - 20 ; least 0*18 ; height (MO of an inch. 



Habitat. King George's Sound. Masters. 



The red markings are characteristic, but it does not very closely 

 resemble the two next species from the same colony. 



38. Helix funerea. Cox. Plate III. Fig. 1, natural size and 

 magnified. M.C. 



Shell urnbilicated, depressed, nearly discoid, rather thin, rather 

 strongly, regularly, and very closely arcuately ribbed both above 

 and below, covered with dark blackish-grey epidermis with no 

 lustre ; spire flat, or very nearly so ; whorls 4, convex, last rounded, 

 not descending in front ; umbilicus perspective ; equalling J of the 

 diameter ; aperture nearly diagonal, ovately -lunate, pearly within ; 

 peristome simple, thin, straight, columellar margin very sbghtly 

 expanded. 



Diameter, greatest - 25 ; least 0'21 ; height - 10 of an inch. 



Habitat. Mudgee, New South Wales, in decayed logs. Cox. 



Apparently little subject to variation in colour, very beautifully repre- 

 senting H. inusta, but more coarsely sculptured, and having a large 

 umbihcus. 



39. Helix sublesta. Benson. Plate XL Fig. 10, copied from Reeve. 

 Bens., Ann. and Mag., Nat. Hist., 1853, Vol. II., p. 30. 



Reeve, Cone. Icon. sp. 1177. 



Shell rather widely urnbilicated, depressed, almost discoid, thin, very 

 minutely striated like small ribs, above reddish-horny, below horny; 

 spire scarcely elevated ; suture impressed ; whorls 4, slightly convex, 

 the last not descending, roundish ; umbilicus perspective, occupying 

 almost \ of the diameter ; aperture vertical, roundly-lunate ; peris- 

 tome simple, straight, acute, margin- approximating. 



Diameter, greatest - 14; least - 10 ; height 0*05 of an inch. 



Habitat. Freemantle, "Western Australia. Bacon. 



Not having seen a specimen of this shell, the above description has 

 been taken from Pfeiffer's Mon. Hel. Viv., Vol. IV., p. 89. Benson 

 states that it is "near H. iuloidea." Peeve, "on examination," 

 declares it to be operculated, and to be a Cyclostoma ; an opinion 

 which Pfeiffer states is evidently erroneous. 



40. Helix Cygnea. Benson. Plate XII. Fig 3, copied from Reeve. 

 Bens., Ann. and Mag., Nat. Hist., 1853, 2nd ser., Vol. XL, p. 30. 

 Reeve, Cone. Icon. sp. 1182. 



Shell urnbilicated, orbicularly depressed, sub-discoid, thin, brown 

 horny, obliquely and somewhat membranously ribbed, extremely 

 minute, descending strise seen with the lens ; spire scarcely 

 elevated, flattened at the apex (-P/K), convex (Reeve) ; whorls not 

 quite 4-^, convex, rather narrow, last not descending, rounded ; 

 umbihcus conical, almost equalling I of the diameter ; aperture 



