Hurton.—On the Molluscan Fauna of New Zealand. 181 
Haliotis iris. Teeth. a, a marginal tooth. 
th. 
Acmea conoidea. Teeth. a, plates; b, side view of tooth. 
Acmea corticata. Teeth. a; plates. 
Acmea pileopsis. Teeth. a, plates; b, side view of tooth. 
Acmea flammea. Teeth. a, plates 
PLATE 
ZR ERM pi 
XVI. 
Patella magellanica. Teeth (removed on one side). 
Patella denticulata. Teeth. a, plates. 
Patella illuminata. e 
Patella oliv 
Tou slanke pr 
Teeth. ¥ 
fas seateondiiin. Teeth, 
Cryptoconchus porosus. Teeth. 
Chiton pellis-serpentis. Teeth. 
HO Hoo wp 
Art, VII.— Additions to the Molluscan Fauna of New Zealand. 
By Professor F. W. Hurron. 
[Read before the Philosophical Institute of Canterbury, 2nd March, 1882.] 
Ponyrropa CHEESEMANI, Sp. nov. 
Suet small, fusiform, white, spirally ribbed, and between the ribs finely 
transversely lirated. Whorls five, those of the spire small, with a single 
smooth spiral rib; body-whorl large, with five spiral grooves between the 
ribs; ribs broad and smooth, grooves narrow and transversely lirated. 
Aperture moderate, contracted in front into a short, open, slightly-twisted 
canal; four or five short well-developed teeth inside the outer lip. In- 
terior bright purple, without any white margin; columella slightly tinted 
with the same colour. 
Length ‘6; diameter :85 inch. 
Collected by Mr. T. F. Cheeseman at Port Waikato, 
I have.seen a considerable number of specimens, and they exhibit very 
little variation. The species is easily distinguished from P. striata by the 
small number of grooves on the body-whorl; and from P. squamata by the 
smooth ribs, and the colour of the interior. From P. propinqua, Tenison- 
Woods, it differs in having the grooves narrower, and one less of them, and 
_in the outer lip not being smooth. 
Prevrotoma (Drui) AwaMoaENsis, Hutton. Cat. Tertiary Mollusca of 
New Zealand (1874), p. 4. 
Not uncommon at Waiwera, near Auckland (Cheeseman). 
Shell small, thin, fusiform, turretted, white ; whorls 82, the first three or 
three-and-a-half smooth and convex, afterwards slightly carinated, spirally 
