SUBANTARCTIC ISLANDS OF NEW ZEALAND. [Mollusca. 



Fam. CHITONIDAE, Pilsbry. 

 Genus Chiton, Linne, 1758. 

 Distribution. — World-wide. 



Chiton aereus, Reeve, 1847, var. 



Chiton aereus. Reeve, Conch. Icon., pi. vii, fig. 36 ; Voy. Ereb. and Terr., pi. i, fig. 9 ; 

 Man. Conch. (1), xiv, p. 179, pi. xxxvi, figs. 96-97. 



HfJ). — Auckland Islands (Captain J. Bollons). 



Littoral and laminarian zone, from the Bay of Islands to the Bluff. 



The only specimen from the Auckland Islands is brownish-red, the central 

 areas are not shagreened, and more of the outer furrows on the pleura extend the 

 whole length than is usually the case. 



Genus Onithochiton, Gray, 1847. 

 Distribution. — From Cape of Good Hope to New Zealand. 



Onithochiton undulatus subantarcticus, Suter, 1907. 



Chiton undulatus, Quoy and Gaimard, Voy. " Astrolabe," iii, 1835, p. 393, pi. Ixxv, 

 figs. 19-24. 0. und. subantarcticus, Suter, T.N.Z.I., xxxix, 1906 (1907), 

 p. 268. 



This colour variety is usually uniform chocolate or purplish-brown, sometimes 

 with white patches on the ridge, or with white concentric lines. 



Hah. — Auckland Islands (Professor Benham) ; Campbell Island. 

 Also New Brighton and Cook Strait. 



Fam. ACMAEIDAE, Philippi. 



Genus Acmaea, Eschscholtz, 1830. 

 Distribution. — World - wide . 



Acmaea intermedia, Suter, 1907. 



Acmaea intermedia, Suter, P. Mai. S., vii, 1907, p. 316, pi. xxvii, figs. 6-8. 



Shell with 25 to 50 smooth radial riblets, which are sharp, and there are usually 

 no secondary shorter riblets ; spatula dark-brown. 



Hab. — Near the Bounty Islands, in 50 fathoms (Captain J. Bollons). 



Acmaea roseoradiata, Suter, 1907. 

 Acmaea roseoradiata, Suter, P. Mai. S., vii, 1907, p. 317, pi. xxvii, figs. 9, 10. 



Shell very small, 3-5 by 2-5 by 1"5 mm., smooth, whitish with 10 radiate pinkish 

 rays. 



Hab. -Jie&r the Snares Islands, in 50 fathoms (Captain J. Bollons). 



Also Stewart Island, Dusky Sound, and Taumaki Island, in 10-30 fathoms. 



