SUTER: NEW ZEALAND TROCHIDA. 268 
slobose-conic, narrowly perforate, cinereous, spirally grooved, 
ee eae with white spots at regular distance. Columella 
ing thick, obtusely dentate below, white-edged. Umbilico- 
eis area bright-green with undulating narrow bands of purplish- 
prown. Alt. 17, diam. 16-18 mm. | 
The only specimen I have, measures 9 xX 12mm., having 3°5 whorls 
only; the apex is not eroded, protoconch smooth, dark-orange. 
a 3 
Pilsbry states that it 1s sometimes impertorate. 
Hab.—Auckland, on Zostera beds; scarce (T. F. Cheeseman). 
Genus CANTHARIDUS, Montfort, 1810. 
Subgen. Canruarripus, Monttf. 
Sect. CANTHARIDUS, S.S. 
16. CANTHARIDUS IRIS (Gmelin). 
Trochus iris, Gmelin: Syst. Nat., 13th ed., p. 3580, No. 86. 
Cantharidus iris (Gmel.): Hutton, Man. New Zealand Moll., p. 99; 
Hutton, Proc. Linn. Soc. New South Wales, vol. ix, p. 361. 
- Canthiridus Zealandicus, A. Adams: Proc. Zool. Soc., 1851, p. 169. 
Cantharidus Zealandicus, A. Ad.: Hutton, Man. New Zealand Moll, 
0G; 
Cantharidus iris (Gmel.): Pilsbry, Man. Conch., ser. 1, vol. x1, p. 122, 
pl. xxxiv, fig. 15. 
Shell elevated, conical, obtusely angular at the periphery, whitish 
with longitudinally undulating purplish-red streaks; obsoletely lirate, 
about five separated narrow ridges on the base. The largest species of 
the genus. Alt. 40, diam. 30 mm. 
I follow Hutton in placing Adams’ Cantharidus Zealandicus as 
a synonym of this species, Pilsbry taking it as a synonym of 
C. pruninus (Gould), which I do not think to be correct. 
/Hab.—Auckland to Cook Strait; Chatham Is. 
17. CaANTHARIDUS PRUNINUS (Gould). 
Trochus pruninus, Gould: Proc. Boston Soc. Nat. Hist., vol. iii (1849), 
p. 90; U.S. Explor. Exped., Moll. p. 180, fig. 208 ; Otia, 
p- 90. 
Lrochus capillaceus, Philippi: Zeitschr. f. Malak., 1848, p. 102. " 
Lrochus episcopus, Hombr. & J acq.: Woy. Pole Sud, Zool. vol. v, p- 99, 
pl. xiv, figs. 9-11. 
Cantharidus episcopus (Hombr. & Jacq.): Hutton, Man. New Zealand, 
Moll., p. 100. 
Cantharidus aan (Gould): Hutton, Proc. Linn. Soc. New South 
_ Wales, vol. ix, p. 861. 
Cantharidus pruininus (Gould): Pilsbry, 
p. 122, pl. xlvi, figs. 60, 61. 
Man. Conch., ser. I, vol. x1, 
