HELIX-ALLODISCUS. 67 



gins not approaching; columellar margin obliquely ascending, 

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



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. (Hidt.) 



Napier, North /., 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. N. Z. lust, xvi, p. 201 ; Manual 

 II, p. 211.) 



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



G. ADRIANA Hutton. Unfyured. 



Shell small, discoidal, narrowly umbilicated, finely ribbed ; 

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

 flat; whorls 4J, 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, 

 rotuudly 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 /., New Zealand. 



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

 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 41-5, 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 rotundly lunar ; peristome thin ; the right 



