122 Transactions. 
Length in front of aperture, 6mm.; length through aperture, 10 mm. ; 
width, total, 13 mm. ; width of aperture, 9:5 mm. 
Locality: Blue clay, Castlecliff. (Marshall.) 
Type to be presented to the Wanganui Museum. 
There are two specimens, one in perfect condition, the other somewhat 
worn and the apefture imperfect. It is apparently rare. No doubt it 
is closely allied to Suter's Recent species from Cape Maria van Diemen, 
a small, fragile, and semitransparent shell; it differs in the much stouter 
shell, much: greater expanse of the aperture, and its size. We are 
indebted to Professor Benham for comparing it with Suter’s type in the 
Otago Museum. 
Austrotriton neozelanica n. sp. (Plate 15, figs. 4, 5.) 
Shell of medium size, spire narrow, slightly longer than aperture and 
canal, body rather inflated and has a somewhat oblique and distorted aspect 
to whorls above, canal short and narrow. Whorls six, protoconch missing, 
succeeding whorls convex, lightly shouldered a little above sutures, later 
whorls distinctly concave a little below sutures thence convex with a 
short inward curve to suture below. Sculpture consists of irregular nodular 
axial ribs and small granular spirals, nodules on spire-whorl strongest on 
lower third, above this much suppressed, frequently consisting of irregular 
small tubercules, on periphery of the last they are strong and rounded with 
a part row of smaller nodules below, absent towards outer lip. Varices 
about ten, not prominent, on the body there is one in front of aperture 
and another close behind outer lip ; spirals numerous, narrower than grooves 
and with irregularly disposed small granules. Sutures slightly impressed, 
undulating. Aperture ovate, small channel above, outer lip somewhat 
reflexed and with number of denticles within margin, parietal wall deeply 
excavated, columella narrow, slightly curved forward, callused and with 
several stout teeth on lower half, canal very short 
Length, 45 mm. ; width, 24 mm. 
Locality: Target Gully shell-bed, Oamaru. 
Type to be presented to Wanganui Museum. 
The specimen was submitted to Mr. Charles Hedley, who reports 
that he is unable to match it with any shell in the Australian Musenm. 
A. parkinsonius Perry is recorded by Suter in our Recent fauna. 
Syrnola semiconcava n. sp. (Plate 13, fig. 5.) 
Shell small, very slender, gradually tapering, slightly curved forward, 
smooth, imperforate; whorls eleven or twelve, flat or faintly concave, 
| Length, 7-5 mm. ; width, 1-25 mm. ; length of aperture, approximately 
mm. 
Locality : In fine bluish clay, Awamoa Stream, about half a mile inland 
from the Coast Road, Oamaru. 
Type to be presented to Wanganui Museum. 
Appears to be quite distinct from other New Zealand forms ; the flat | 
. semiconcave whorls and narrow lightly channelled sutures readily dix 4 
tinguish it. E 
