AUSTRALIAN LAXD SHELLS. 27 



by a very thin callus, columellar margin above triangularly dilated 

 and reflected. 

 Diameter, greatest 0*70 ; least - 55 ; height - 25 of an inch. 



Habitat. Clarence and Richmond Rivers. MacGillivray. 



As I have reason to suspect the shell I formerly named H. assimilans 

 to be that previously described as H. bullacea, of Pfr., I have here 

 placed them under one description, but with much uncertainty. 

 My specimens agree sufficiently well with Pfeiffer's descrip- 

 tion, Hon. Eel. Vie, Vol IV., p. 92 ; but when I compare 

 them with Reeve's figure, to which Pfeiffer refers, I see that 

 this does not agree, being prominently striped, with the letter 

 press, which gives the colour as ash-horny, treats of spiral strire, and 

 whorls obsoletely-roundly-keeled at the periphery. Consequently, 

 this second reference, instead of being of assistance, tends only to 

 confound the matter, for both refer to the Cumingian cabinet for the 

 type specimen. 



68. Helix Franklandiensis. Forbes. Plate III. Pig. 7. M.C. 

 Forbes, Voy. Rattlesnake, Vol. II., p. 372. PI. II. F. 2, a. b. 



Shell umbilicated, rather flatly-orbieularry-depressed, thin, very glossy, 

 yellowish-horn colour, faintly striated, with numerous irregular 

 radiating darker streaks ; spire very small, nearly flat ; whorls 5, 

 slightly convex, last convex, very much dilated, slightly depressed 

 near the mouth ; base convex, of same tint as upper surface and 

 equally shining; umbilicus wide, perspective, equalling rather more 

 than \ of the diameter ; aperture nearly diagonal, roundly or 

 slightly ovately-lunate ; peristome thin, simple, straight, margins 

 approximating, columellar margin not dilated above. 



Diameter, greatest 1'10; least - 95 ; height 0*45 of an inch. 



Habitat. Frankland and Lizard Isles, Queensland. MaeGillivray. 



N.B. This species is referred by Pfeiffer to his section Discus. 



69. Helix Strangeoides. Cox. Plate XVII. Fig. 3, natural 

 size. Fig. 3 a., 3 b. much magnified. 



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



Shell umbilicated, very depressly-orbicular, somewhat discoid, thin, 

 transparent, shining, irregularly and rather coarsely striated, de- 

 cussated with numerous fine, close, spiral lines, yellowish-horny ; 

 spire very slightly prominent, rounded ; whorls 4, very rapidly 

 increasing, last depressed above, roundly-convex outwardly and 

 below ; base smooth, with faint markings ; umbilicus large, open, 

 nearly \ of diameter ; aperture lunately-ovate ; peristome simple, 

 thin, margins approaching. 



Diameter, greatest 0-40 ; least 0'33 ; height 0*15 of an inch. 



Habitat. Moreton Bay. King. 



Distinguished from H. splendidula by the possession of the spiral decus- 

 sating lines. Four specimens in the collection of the Rev. R. L. King 

 are all that I have seen. 



