Molluscn.] SUBANTARCTIC ISLANDS OF NEW ZEALAND. 19 



cuttiiifi-pdints. tlic middle one larjTcst. First marifinal witli 3 subequal denticles, 

 the second witli 2 sharp inimite hooks at the apex, the upper one with a number 

 of very small cutting-points. 



Type in the Canterbury Museum, Christchurch. 



H(th. — Campbell Island, type (Professor Chilton) ; Aucklaiul Islands (Captain 

 J. Bollons). Specimens from the latter locality are also in the British Museum. 



The species is named in lumour of its discoverer. Professor C. Chilton, D.Sc, 

 xM.A., M.R. 



Fam. OMALOGYRIDAE, Sars. 

 Genus ( )malogyra, Jeffreys. 1860. 

 J)is/n'hutio)i. — Europe, (Treenland, and South Africa. 



Omalogyra bicarinata, Suter, 190S. 

 Omnlngi/rii hicaiiiia/a. Suter. P. Mai. S., viii, 1908, p. 33, pi. iii. fig. 37. 

 Hah. — Snares Islands, in oO fatlioms (Captain ,1. Bollons). 



Fam. CERITHIIDAE, Fleming, 

 (ienus BiTTiUM, Gray, 1847. 



Dinfrihution. — Numerous species in temperate seas. 



Bittium retiferum, Suter. 1908. 

 Bittiinii retifemui. Suter, P. Mai. S.. viii, 1908. p. 34, pi. iii, fig. 3S. 

 Hdh. — Snares Islands, in oO fathoms (Captain J. Bollons). 



Fam. CERITHIOPSIDAE, H. and A. Adams. 

 Genus Cerithiopsis, Forbes and Hanley, 1853. 

 Disfrlhutin)). — Mostly in northern and temperate seas. 



Cerithiopsis sarissa, ^Murdoch, 1905. 

 Cerithinpsis sarissa, Murdoch, T.N.Z.I., xxxvii, 1904 (1905), p. 221, pi. vii, figs. 8, 9. 



Hah. — Near the Snares and Bounty Islands, in 50 fathoms (Captain J. Bollons). 



Also off Otago Heads, Banks Pt'iiinsula, Cook Strait, Kawhia Harbour, and 

 Whangaroa Harbour. 



Cerithiopsis crenistria, Suter, 1907. 

 Cerithiopsis crenistria, Suter, T.N.Z.I., xxxix, 1906 (1907), p. 256, pi. ix, fig. 4. 

 Hah. — Snares Islands, in 50 fathoms (Captain J. Bollons). 



Also Hauraki (Julf. 



