1 20 Transactions. — Zoology. 



considered as a distinct species ; it may, however, be the same as E. littori- 

 noides, Reeve. I have collected at Lyttelton a single living specimen of E. 

 striata, Hutton (Trans. N.Z. Inst., vii., p. 458), and find that its denti- 

 tion exactly resembles that of E. lineata here figured, the shell is quite 

 colourless, but the animal is spotted with maroon brown. 



Euthria vittata, Quoy and Gaimard. PI. XIII., fig. i. 



Dentition. — Central tooth nearly as long as broad, flat in front, convex 

 behind, with three acute denticles; lateral' teeth with the outer cusp very 

 large, the two inner small and close together. Operculum oval, sub-ungui- 

 culate, nucleus apical. 



The specimeus figured were collected at Auckland. 



COMINELLA VIRGATA, Adams. PL XIII., fig. K. 



Dentition and operculum normal. 



The specimen figured was collected at Auckland. 



COMINELLA MACULATA, Mai'tyn. PI. XIII., fig. L. 



Dentition and operculum normal. 



The specimen figured was collected at Auckland. 



Cominella maculosa, Martyn. PL XIII., fig. M. 



Dentition and operculum, normal. Animal. — Foot emarginate in front; 

 yellowish white, reticulated with bluish black, and margined anteriorly with 

 yellowish white. Siphon moderate, tapering, black (drawn too long by Quoy, 

 Voy. Astrol., pi. 30, f. 8-10). Eyes half-way up the tentacles. Tentacles 

 black above the eyes, and slightly tipped with white ; below the eyes they 

 are longitudinally streaked with black. 



The specimens described were collected at Lyttelton. 



Cominella testudinea, Chemnitz. PL XIII., fig. n. 



Dentition and operculum normal. 



The specimen figured was collected at Auckland. 



Polytropa haustrum, Mai'tyn. PL XIII., fig. o. 



Animal. — White ; tentacles short and blunt, the eyes situated more than 

 half-way up. Dentition. — Central tooth broad, slightly curved with five sub- 

 equal triangular contiguous cusps. Operculum oval, the nucleus sub-lateral. 



The specimen figured was collected in Auckland. 



This species has usually been put into Purpura, but its operculum is 

 sufficient to remove it from that genus, and the aperture has no posterior 

 canal. 



Purpura textiliosa, Lamarck. PL XIII. , fig. p. 



Dentition. — Central tooth slightly sinuous, with three long triangular 

 cusps, the median of which is the largest. Operculum semi-cordate, the 

 nucleus lateral, on the exterior side. 



The specimen figured was collected in Auckland. 



