74 Transactions. — Zoology. 



ber of lougitudinal ribs. In specimens before me tiiey vary 

 from 10 to 16 on the last whorl. The reddish-brown bands 

 are souietimes absent, the anterior canal only being of a 

 brown or reddish colour. 



Clathurella subabnormis, n. sp. Plate III., figs. 4, 4a. 



Shell small, ovate-fusiform, body-whorl shorter than the 

 spire, white, with irregular light-brown dashes below the 

 suture on the two last whorls only, and a broad brown band 

 below the termination of the riblets on the body-whorl ; some- 

 times the whole shell is uniformly light-brown. Whorls 6, 

 rounded, longitudinally plicate and spirally striate ; about 14 

 oblique riblets on the body-whorl, which are crossed by dis- 

 tinct spiral strite, about 8 on the penultimate whorl. Proto- 

 conch formed by two smooth mammiliary whorls. Suture 

 impressed, margined. Aperture oval-elongated, outer lip 

 somewhat callous, sometimes with 2 or 3 small tubercles 

 within, slightly sinuous, posterior sinus but faintly indicated ; 

 columella regularly arched, with a slight callosity ; anterior 

 canal very short, broad, truncated. Animal unknown. 



Length, o-5 mm. ; breadth, 2-5 mm. ; height of aperture, 

 2 mm. 



Type in my collection. 



Hab. Lyall Bay (A. Hamilton). 



This species is nearest to the Pliocene G. abnormis, 

 Hutton, in which, however, the whorls are angled, the costae 

 less numerous, the spiral striae but a few, none above the keel, 

 the sinus is well marked, and the aperture much narrower. 



Clathurella nodicincta, n. sp. Plate III., figs. 5, oa. 



Shell fusiform, turreted, body-whorl shorter than the spire, 

 cream-coloured, clathrate. Whorls 6h, with strong elevated 

 cinguli, 3 on the upper whorls, 8 on the body-whorl, crossed 

 by longitudinal straight riblets, producing nodules on the 

 ci'ossing-points ; between the I'iblets numerous fine incremental 

 striae. In most of my specimens the cinguli are predominant, 

 the longitudinal costae recognisable only by the presence of the 

 nodules on the cinguli. Protoconch smooth, mammiliary, 

 consisting of 2 whorls. Suture impressed, margined by a fine 

 thread above. Aperture oval, outer lip thickened, somewhat 

 straight in the middle, with 2 small denticles within ; 

 posterior sinus below the suture broad and very shallow, 

 sometimes absent ; columella concave, but little callous. An- 

 terior canal short, broad, truncated. Animal unknown. 



Length, 6-5 mm.; breadth, 2-75 mm.; height of aperture, 

 2-5 mm. 



Type in my collection. 



Hab. Lyall Bay (A. Hamilton). 



