Mr. T. W. Kirk on New-Zealand Mollusca. 15 



to meet the anterior spine of the third joint, a row of three 

 small blunt spines on the inferior angle. Superior margin of 

 distal extremity of last four pairs of legs armed with a spine. 



Abdomen very coarsely granulated and punctate. Tail, 

 especially the telson, armed with small spines ; telson rounded 

 at the extremity. Anterior margin of each segment of the 

 abdomen produced into a very prominent spine, backed by 

 three or four teeth. 



Whole animal destitute of hair, with the exception of the 

 pedipalps and the inferior surface of the terminal joint of each 

 pair of legs. 



Colour reddish brown, tinged in many places with yellow. 

 Length 24 inches ; circumference of carapace 2\\ inches. 



Distinguished from P. Hugelii by its much larger size, by the 

 beak, supraorbital, and antennal spines being turned upwards, 

 by the telson being less triangular, and rounded instead of 

 scarped. 



IV. — Additions to the List of New-Zealand Marine 

 Mollusca. By Thomas W. Kirk, Assistant in the Colonial 

 Museum, N. Z. 



Dentalium Huttoni, sp. nov. 



Shell white, lustrous ; small, curved, rapidly tapering, 

 ribbed, ribs unequal, about eighteen at the anterior end, but 

 diminishing in number towards the apex. Length 'Go inch, 

 breadth *1 inch at the anterior end. 



Hab. Wellington. 



Named after Prof. Hutton, to whose exertions students of 

 conchology in New Zealand are greatly indebted. 



Dentalium ecostatum : sp. nov. 



Shell white ; nearly straight, smooth, gradually tapering, 

 faintly, distantly, transversely striated. Length *6 inch ; 

 breadth *07 inch at the anterior end. 



Hab. Waikanae. 



Scalaria wellingtonensis, sp. nov. 



Shell white, lustrous ; acuminate, imperforate ; whorls 

 nine, rounded ; varices numerous, thin, about seventeen on 

 the body-whorl ; interstices smooth ; aperture subrotund. 

 Length *4 inch. 



Hab. Wellington. 



Cylichna zealandica, sp. nov. 



Shell white ; strong, smooth, faintly longitudinally striated ; 

 aperture produced above the spire. Length *35 inch. 

 Hab. Waikanae. 



