BY PROFESSOR F. W. HUTTON, F.G.S. 365 



Bankiyia varians, Beck, in Krauss' Sudafric Moll. (1848). 



Habitat. — Cook's Straits. Found also in Tasmania and 

 Australia. 



Variable in colour, white, pui-ple, pink, or black, plain or 

 banded, sometimes with longitudinal undulating lines. 



The animal is unknown as also is the dentition and operculum. 



Genus. Monilea. Swainson. 



Monilea egena. Gould (Solarium) Proe. Bost. Soc. Nat. Hist. 

 III., p. 84, (1868), U. S. Expl. Expd. XII., p. 116, Atlas, 

 fig. 223. Monilea zealandica, Hutton, Cat. Marine Moll, of 

 New Zealand, (1873). Margarita zealandica, Sowb. in 

 Reeve's Conch., Icon., fig. 17. 

 Habitat. — Bay of Islands. 



Some^of the spiral ribs are subgranular. Brownish white with 

 longitudinal nexuous bands of brownish purple. 

 The dentition and operculum are unknown. 



Genus. Monodonta. Lamarck. 



Trochocochlea Klein, 



Sub-genus. Diloma. Philippi. 



Monodonta -ethiops. Gmelin, after Chemnitz, Conchy Cab. V. 

 figs. 1820-1821 (1781). M. reticularis, Gray in Woods Ind. 

 Test, Suppl, (1828), and in Diffenbach's New Zealand, II., 

 p. 238. Trochus zealandicus, Quoy and Gaimard, Voy. 

 Astrolabe, Zool. III., p. 257, pi. 64, figs. 10-11 (1834); 

 Gray, Figs. Moll. Anim. I., pi. 40, fig. 9. Labio concolor, 

 Adams, Proc. Zool. Soc. of London, 1851, p. 180. 

 Habitat. — Throughout New Zealand, Chatham Islands, 

 Auckland Islands. 



Shell rough ; whorls distantly spirally grooved and obliquely 

 striated with growth lines ; four or five grooves on the body 

 whorl above the periphery. Colour brownish purple, when 

 rubbed purple, spirally tessellated with white ; mouth purplish 

 black. 



