HELIX-ALLODISCUS. 67 



gins not approaching; columellar margin obliquely ascending, 

 slightly reflected and thickened. Diameter '5 inch. (Htitt.) 



The generic position of this shell is very doubtful; it somewhat 

 resembles H. igniflua, but differs in its very narrow umbilicus. 

 The only specimens I have seen were old and rubbed. (Hutt.) 



Napier, North L, New Zealand. 



Charopa (/) cassandra HUTT., Tr. N. Z. I. xvi, p. 181. Psyra 

 cassandra HUTT., Ibid., p. 201. 



My figures were drawn from Prof. Button's type. 



G. VENULATA Pfr. (See Trans. K Z. Inst. xvi, p. 201 ; Manual 

 II, p. 211.) 



G. TULLIA Gray. (Manual vol. II, p. 211.) 



G. ADRIAN A Hutton. Unfigured. 



Shell small, discoidal, narrowly umbilicated, finely ribbed ; 

 color pale horny with spots and angular streaks of chestnut. Spire 

 flat ; whorls 4, slowly increasing, rounded, delicately ribbed ; ribs 

 about 50 in the tenth of an inch, the interstices reticulated ; suture 

 impressed ; umbilicus narrow, but open ; aperture slightly oblique, 

 rotundly lunar; peristome thin, regularly arched, the columellar 

 margin slightly reflected. 



Greatest diameter '16, least '14, height '07 inch. (Hutt.} 



Bank's Peninsula; and Napier, North I., New Zealand. 



Fruticicola adriana HUTT,, Tr. N. Z. Inst. xvi, p. 175. Payra 

 adriana HUTT., Ibid. p. 201. 



The specimens before me are immature. Hutton says : spire flat, 

 closely ribbed ; ribs about 40 in the tenth of an inch ; umbilicus 

 narrow but open. 



G. PLANULATA Hutton. Vol. IX, PI. 3, figs. 4, 5, 6. 



Shell small, depressed, subperforated, closely ribbed, rather shin- 

 ing; color horny-brown, sometimes clouded with rufous. Spire 

 slightly elevated, flatly convex ; whorls 45-5, slowly increasing, 

 rounded, ornamented with fine, slightly undulating ribs about 35 

 to 40 in the tenth of an inch, the interstices finely striated with 

 growth lines; last whorl rounded at the periphery, but slightly 

 flattened below; sutures impressed; umbilicus very narrow and 

 generally covered over by the reflected columellar lip; aperture 

 subvertical, transversely rotuudly lunar ; peristome thin ; the right 



