StTTER : NEW ZEALAND TEOCniDJ.. 277 



on the last whorl ; spirally, closely striate. "Whorls Sh, convex, the 

 last rounded at the periphery ; protoconch white, smooth. Aperture 

 circular, thickly margined with a white callosity all ronnd, columella 

 subtruncate below. Umbilicus narrow but open, its margin slightly 

 creuulate by radial folds. Base convex. Alt. 3-5, diam. 6 mm. 

 Specimens from Bounty Island measure 2-25 X 3 mm. 

 JIab. — Stewart I. ; Bounty I. ; Campbell I. 



30. GiBBULA ANTipoDA (Homljrou & Jacquinot). 



Margarita antipoda, Hombr. & Jacq. : Voy. Pole Sud, Zool. vol. v 

 (1854), p. 58, pi. xiv, figs. 26-8; Hutton, Man. J^ew 

 Zealand Moll., p. 103; Proc. Linn, Soc. New South 

 Wales, vol. ix, p. 363. 



Gihhula antipoda, Pilsbry : Man. Conch., ser. i, vol. xi, p. 217, 

 pi. xxxiii, figs. 102-4. 



Shell small, perforate, depressed-conoidal, yellowish-green, iridescent, 

 with 4-5 green or blackish spiral bands above, and sometimes below, 

 the periphery. Whorls 3, the last very large, faintly spirally striated 

 and with rather strong growth-lines, periphery rounded. Aperture 

 large, round, margined by a white callus. Umbilicus almost closed up 

 by the columellar reflection. Alt. 8, diam. 8 mm. A specimen from 

 Antipodes Island measures 4-5 X 6 mm. 



Hah. — Auckland Is. ; Antipodes I. 



31. GiBBULA NiTiDA, Adams & Angas. 



GiUula nitida. Ad. & Aug.: Proc. Zool. Soc, 1864, p. 36; Hutton, 

 Man. New Zealand Moll., p. 102; Proc. Linn. Soc. New 

 South AVales, vol. ix, p. 364 ; Pilsbry, Man. Conch., ser. i, 

 vol. xi, p. 217, pi. xxxvii, figs. 25-7. 



Clirymdoma inconspicua, Hutton: Cut. Mar. Moll., 1873, p. 36. 



Margarita {^.) incompima, Hutton: Man. New Zealand Moll., p. 102 ; 

 Trans. New Zealand lust., vol. xv, p. 124, pi. xiv, fig. N 

 (radula). 



Shell small, conical, narrowly umbilicate, olive-yellow or bluish- 

 grey, marked with numerous, continuous, thread-like, white, spiral 

 lines, generally broken up in tessellations ; spire elevated, with convex 

 outlines ; last whorl obtusely angular around the periphery ; base with 

 7-8 concentric lira?. Aperture rounded-i^uadrate, outer lip finely 

 crenulated, within brilliantly iridescent ; columella arcuate. Umbilicus 

 funnel-shaped, yellowish within. Alt. 6*5, diam. 5-5 mm. ; alt. 7, 

 diam. 6-5 mm. 



Specimens from Dunedin are bluish-black, shining more or less 

 distinctly, spirally striate, umbilicus haK covered by the columellar 

 expansion. Alt. 8, diam. 7 mm. 



Rah. — East and west coasts of both the North and South Islands ; 

 on stones near low-water mark. 



