AUSTRALIAN LAND SHELLS. 37 



striated, for the most part granulated; whorls 4, convexl}' depressed; 



peristome sharp, angled near the umbilicus, lip straight, dilated 



above the umbilicus, and broadly reflected. 

 Diameter I'lO ; height 090 of an inch. 

 Habitat. Northern Australia. Is Guillou. 

 Not having ever seen this species, the above characters have been 



taken from Pfeiffer, Mon. Hel. Vw. 



94. Helix lsesa. Reeve. Plate IT. Fig. 9. M.C. 

 Reeve, Cone. Icon. sp. 1490. 



Shell rather narrowly deeply umbilicated, depressly- globose, plicately 

 striated, and everywhere minutely granulated, livid-greenish, purple 

 stained ; spire sub-conoid ; whorls 5 to 6, convex, the last a little 

 deflected in front ; aperture rotundately-lunar, lip expandidly re- 

 flected, white, broadly dilated at the umbilicus. 



Diameter, greatest 0-98 ; least 0'59 ; height 0-68 of an inch. 



Habitat. Dural, near "Wiseman's Ferry, Hawkesbury River. Cox. 



Hunter River. Scott. 

 Reeve, from whom the above description is taken, observes, that it is a 



simple minutely granulated species, of a peculiar purple livid or 



greenish hue, allied to IT. Grayi. 



95. Helix Victorise. Cox. Plate XII. Fig. 5. Australian 

 Museum. 



Shell narrowly umbilicated, depressly-globose, thin, finely plicately 

 striated, uniformly bi*own, but lighter at the base than above; 

 whorls 5, rather rounded, the last much inflated ; spire short, suture 

 impressed ; aperture rounded, lip thin, simple, margins approxi- 

 mating, columella!- margin at its base only slightly reflected. 



Diameter, greatest 0*63 ; least 0-50 ; height - 45 of an inch. 



Habitat. Western Port, Victoria. Masters. 



96. Helix expeditionis. Cox. Plate XVIII. Fig. 12. Australian 

 Museum. 



Shell openly umbilicated, glohosely-depressed, transversely dilated, 

 thin, transparent, light yellowish-brown ; whorls 5^ to G, the last 

 very large, descending in front, irregularly roughly striated, shining, 

 not granular ; aperture lunar-oval, faintly tinged inside, within the 

 peristome, with lilac ; lip white, porcellaneous, everted for about 

 | of its extent from the columella, the margin of which is rather 

 broadly expanded, \ covering the umbilicus. 



Diameter, greatest l - 04; least 090 ; height 0*80 of an inch. 



Habitat. Tropical Australia. Sir Thomas Mitchell. 



97. Helix maicescens. Cox. Plate IV. Fig. 5 ; and Plate XVIII. 

 Fig. 6, 6 a. M.C. 

 Cox, Pro. Zool. Soc, 1807. 



Shell narrowly and deeply umbilicated, depressly-orbicular, thin, 

 translucent, rather shining, very slightly rugosely striated and 

 under the lens, very finely granulated, horny-yellowish ; spire con- 



