198 



PEOCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



27. EuDoxocniTON Huttoni, Pilsbiy. 

 Eudoxochiton Huttoni, Pilsbrv : Man. Couch., ser. I, vol. xiv (1893), 

 p. 194, pi. xlvi, figs. 96-100. 



Hah. — Xorth and South Islands, but very rare. 



ACAJs^THOPLEURA, Guilding, 1829. 



28. ACANTHOPLEURA (MaUGERIA) CORTICATA (Huttou). 



Tonicia corticata, Hutton : Trans. New Zealand Inst., vol. iv (1872), 

 p. 180; Pilsbry, Man. Conch., ser. I, vol. xiv, p. 320. 



Flaxiphora biramosa, Quoy & Gaim. : Hutton, Man. New Zealand 

 Moll., p. 116 {710)1 Quoy & Gaim.). 



A specimen of a rather large Chiton was kindly given me by 

 Mr. A. Hamilton, of Duncdin. 1 had not seen the species before, and 

 I submitted it to Captain Hutton for examination, who declared it to 

 be his Tonicia corticata. The specimen is in a bad condition, in so 



AcantJwjjlenra corttcnta, Jlutton. 



12-13. Veutral views of detached valves. 

 14-16. Dorsal views of detached valves. 

 17. Profile of posterior valve, nat. size. 



far that the valves are separated from the girdle, the head valve is 

 missing, and the girdle is much worn ; it, however, is quite sufficient 

 to make out the generic position with certainty, and to add a littk^ to 

 the diagnosis published by Captain Hutton twenty-four years back. 

 The shell is broadly and roundly arched, the surface much eroded or 

 covered with coralline growth. Colour yellowish-grey, with a brown 

 stripe on the ridge of the valves, and one, much broacler, on each side 

 near the margin. The valves are beaked, thick, and solid, with the 



