10 AUSTRALIAN LAND SHELLS. 



last rounded ; base excavated about the umbilicus, 'which is pervious, 

 moderate, equalling about one-seventh of the diameter. 

 Diameter, greatest 020 ; least 0" 17 ; height - 10 of an inch. 



Habitat. Darling Point, Lyndhurst, and elsewhere about Svdney. 



Cox. 

 A small flattish horny species, hollowed out about the umbilicus. 



Widely distributed in the localities mentioned above. It may 



possibly be an introduction of the European species, from which it 



differs in no respect. 



21. Helix splendidula. Pfr. Plate III. Fig. 3, natural size 

 and enlarged. M.C. 

 Pfr., Pro. Zool, Soc, 1845, p. 128. 



Peeve, Cone. Icon. sp. 973. 



Shell umbilicated, very much depressed, thin, transparent, shining, 

 horny, finely and closely striated, transversely, and with very minute 

 spiral decussating lines, of a rich tawny colour ; spire very slightly 

 projecting, very obtuse ; whorls 4, rapidly increasing, slightly con- 

 vex, last not produced in front where it is rather depressed above, 

 and wide ; umbilicus large, perspective, equalling ^ of the diameter ; 

 aperture diagonal, ovately-lunar ; peristome simple, acute, above 

 slightly curved, thin, regularly arcuate to the base of the columella, 

 which is not dilated. 



Diameter, greatest - 35; least - 30 ; height 0*10 of an inch. 



Habitat. Moreton Bay. King. Palls of the Clyde, Clarence Piver. 

 Mac Gillivray . Cape York. Cuming. 



A species which has a wide range along the east coast of Australia, 

 and varies considerably in size, degree of flatness, distinctness of the 

 stria?, colour, and glossiness. The finest specimens which I have 

 seen are from the brushes of the Clarence and Richmond Pivers, 

 and the same holds good with H. Strangei, an allied shell often 

 found in its company. 



22. Helix ductilis. Pfr. 



Pfr., Pro. Zool. Soc, 1856, p. 385. 



Shell umbiUcated, discoid, thin, under the lens very closely finely 

 striated, whitish-glassy-green ; spire flat ; whorls 5, flattish, gradu- 

 ally increasing, last not descending, depressed, rounded at the 

 periphery, scarcely more convex at the base ; umbilicus perspective, 

 exceeding j of the diameter ; aperture oblique, widely lunate ; peris- 

 tome simple, straight, margins scarcely converging, columellar 

 short, vertical, sub-angular at its junction with the basal. 



Diameter, greatest - 25 ; least 0-22 ; height - 08 of an inch. 



Habitat. Drayton Pange, Queensland. Stutchbury. 



23. Helix minima. Cox. Plate XII. Pig. ?8, natural size and 

 magnified. Australian Museum. 



Shell broadby umbilicated, discoid, shining, yellowish-horny, very 

 finely striated above, smooth at the base ; whorls 5, regularly 



