BY CAPTAIN F. W. HUTTON, F.G.S., &C. 941 



RissoA IMPOLITA. Hutton, Cat. Marine Moll, of New Zealand, 

 p. 29 (1873.) 



Habitat. — Stewart's Island. 



Shell conoidal, white, whorls flattened, finely spirally striated ; 

 sature small. 



Length, 01 inch. 

 RissoA NANA. Hutton, Cat. Marine Moll, of New Zealand, 

 p. 28 (1873.) 



Habitat. — Stewart's Island and Aiickland. 



Shell oval, spire short and blunt ; whorls longitudinally ribbed. 



Length, 0-1 inch. 

 RissOA ROSEA. Hutton, Cat. Marine Moll, of New Zealand, 

 p. 29 (1873.) 



Habitat. — Stewart's Island. 



Shell ovate, pink ; whorls rather flat ; mouth not continuous. 



Length, 0-07 inch. 

 RissoA FLAMMULATA. Hutton, Jour. de Conch., 1878, p. 28. 



Habitat. — Auckland. 



Shell turbinately conical, polished red with oblique white rays ; 

 aperture not continuous. 



Length, 0-25 inch. 

 RissoA LiMBATA. Hutton, New Zealand Journal of Science. Yol. 

 I., p. 477 (1883) ; Trans. New Zealand Institute. . Vol. 

 XVI., p. 214 (1884). 



Habitat. — Auckland. 



Shell turbinately conical, polished ; ashy brown with white spots 

 at the suture. 



Length, 0-11 inch. 



Family. LiTTORiNiDiE.* 



LiTTORlNA CINCTA. Quoy and Gaimard, Voy. Astrolabe, Zool. 

 IL, p. 481, pi. 3.3, fig. 20-21 (1833); Reeve, Conch. Icon., 



* The following species Iiave been omitted : — 

 Littorina i-ilis, Menke. 

 Littorina novie-zealcmdke, Reeve. 

 Risella melanostoma, Gmelin ; inhabits Australia. 

 {R. Kielmansegge, Fraukf.) 



