20 AUSTRALIAN T.AXP STIKLI B. 



not descending in front ; base moderately convex and gradually 

 merging into the umbilicus, which is perspective, and nearly equals 

 ^ of the diameter ; very glossy below, markings mostly interrupted, 

 or broken up, and zigzag ; aperture oblique, lunately-rounded ; 

 peristome simple, acute, approximating at the margins. 



Diameter, greatest 0'28 ; leant 0-25 ; height 010 of an inch. 



Habitat. Cape York, N. Australia. Edwards. 



This well marked species, discoid, shining, and curiously radiated with 

 reddish-chestnut, was originally described as being from New Zea- 

 land, and a large variety, yellow, ornamented along the suture with 

 a broad, jointed, chestnut band, as occurring in the Solomon Islands. 

 My Australian specimens agree perfectly with Pfeiffer's description 

 in his Jlon. llel. Viv., Vol. III., p. 633, and also with specimens 

 from the New Hebrides. 



49. Helix bombyeina. Pfr. Plate X. Fig. 11. M.C. 

 Pfr., Pro. Zool, Soc, 1854, p. 54. 



Peeve, Cone. Icon. sp. 1314. 



Shell umbilicatecl, depressed, discoid, thin, horny, closely, obliquely, 

 and strongly striated, encircled with very numerous spiral bands and 

 lines of various hues of yellow, red, and brown ; spire flattened ; 

 whorls 4, rapidly increasing, nearby flat, last very large, depressed, 

 searceby descending in front; aperture lunately-oval ; base smooth, 

 yellowish, very glossy ; umbilicus perspective, equalling ^ of the 

 diameter ; peristome simple, thin, straight, margins approximating, 

 outer dilated, columellar margin scarcely expanded above. 



Piatneter, greatest - 57 ; least 055 ; height - 30 of an inch. 



Habitat. Mount "Wellington, Tasmania. Ie Grande. 



50. Eelix Stroudeusis. Cox. Plate XL Fig. 1, natural size and 

 magnified. . M.C. 

 Cox, Catalogue of Australian Land Shells, p. 20, 1864. 



Shell umbilicated, depressly-orbicular, nearly discoid, rather thin, 

 translucent, not .shining, with numerous close, fine, curved riblets, 

 pule yellowish-horny; spire scarcely projecting, flat, suture deep; 

 whorls 4, very gradually increasing, last roundly- convex ; base 

 marked as above, the riblets running into the umbilicus, which is 

 small and pervious ; aperture diagonal, lunate ; peristome simple, 

 thin, right lip sub-angular. 



Diameter, greatest 0*12 ; least - 10 ; height - 03 of an inch. 



Habitat. Stroud, Port Stephens, New South Wales. lung. 



Avery minute species, allied to II. Sat urn i, II. lirata, &c, but differing 

 from all the somewhat similarly sculptured species in having a small 

 umbilicus. 



61. Helix Diemenensis. Cox. Plate VII. Fig 6, 6 a. natural size 

 and magnified. M.C. 



Cox, Pro. Zool. Soc., 1867. 



Shell umbilicated, depressed, orbicular, discoid, thin, translucent, with 

 very numerous prominent riblets, not shining, with many radiate 



