33 



DESCRIPTIONS OF SOME NEW LAND MOLLUSCA FROM NEW 

 ZEALAND AND MACQUARIE ISLAND. 



By Heney Sutkr, Christchurch, New Zealand. 



Read \Qth January, 1896. 



PLATE IV. 



1. Lagochilus Chiltoni, n.sp. PL IV, Fig. 1. 



Shell very small, turbinate, subperforate, rufous, slightly glossy, 

 thin, semi-transparent, with rather close longitudinal membranous 

 white costella?, which easily rub off ; they are nearly equidistant, five 

 to six per millimetre, ^pire conical, apex rather pointed ; periphery 

 rounded ; whorls 5, convex, the first three increasing slowly, the 

 others more rapidly, faintly microscopically spirally striated, the body- 

 whorl about two-thirds of the total height ; suture impressed. 

 Apertm-e subcircular, slightly oblique ; peristome simple, straight ; 

 notch at the suture very slightly indicated ; columella lip somewhat 

 callous, expanded, completely covering the small umbilicus ; margins 

 convergent, not united by a callus. Base rounded. Operculum not 

 seen. Alt. 3, diam. 2-25 mm. 



Ty2)e in my collection. 



Hah. — Fern Flat, Buller River, South Island. A single specimen 

 found under a log by Dr. Ch. Chilton, whose name I have much 

 pleasure in connecting with this species. 



Z. ChiUoni is near to L. Medletii, Sut., but the latter is more 

 depressed, the membranous plaits are not equidistant on the body- 

 whorl, the margins of the aperture approximate more, and the narrow 

 umbilicus is open. 



2. Lagochilus (?) Sttjdeki, n.sp. PI. IV, Fig. 2. 



Shell very small, globosely conoidal, perforate, whitish-horny, 

 faintly glossy, fragile, transparent, smooth, showing nnder the lens 

 regular and close lines of growth. Spire conoidal, rather short ; 

 whorls 3i, rather rapidly increasing, convex, slightly flattened below 

 the suture ; periphery rounded ; suture deep. Protoconch smooth, 

 rather obtuse. Aperture ovate, longitudinal ; peristome simple, 

 acute, outer lip regularly arched, basal lip strongly convex, 

 columella lip almost straight, vertical ; margins converging, not con- 

 nected by any callosity. There is no indication of a notch at the 

 suture. Umbilicus pervious, very narrow. Base convex. Operculum 

 thin, horny, transparent, with few whorls round a subcentral nucleus. 

 Alt. 3, diam. 2-25 mm. ; height of aperture 1*5 mm. 



Type in my collection. 



Hah. — Whangarei, North Island (Mr. Grosch). 



VOL. II. — APRIL, 1896. 3 



