4 
Hurros.—On New Zealand Land Shells. 161 
Art. VII.—Notes on some New Zealand Land Shells, with Descriptions of 
new Species, By Professor F. W. Hurrox. | 
a before the Philosophical Institute of Canterbury, 7th June, 1883.] 
Plates IX.-XI. 
I nave divided this paper into two portions, the first containing descriptions 
of the animals and dentition of species that have already been described, 
the second containing descriptions of new species. In the first part I have 
arranged the species according to the Manual of New Zealand Mollusca 
(1880), and under the same names as there given, although the dentition 
proves in many cases that this arrangement is quite wrong. I hope shortly 
to offer a paper containing a new and more natural grouping of all our Land 
. Mollusca. 
A. Old Species. 
Paruna PrLULA, Reeve (= iota, Pf). Pl. ix, fig. K., and pl. xi., fig. m. 
Jaw arcuate, with about 35 flat ribs, which indent the concave but 
not the convex margin. 
Dentition, 27-1-27, varying from 25 to 29. Laterals from 13 to 15. 
Central tooth small, narrower in front than behind, longer than broad, 
the reflexed portion constricted at the sides, covering about half the base, 
with a rather large acute point. First lateral like the central but larger; 
the other laterals with a deep notch on the outer side of the reflexed portion, 
the cutting point increasing in length outwards. Marginals broader than 
long, the inner with a cutting point and a denticle on each side of it; the 
outer serrated, one of the inner points longer than the others. 
Hab. Auckland (T. F. Cheeseman). 
PATULA DIMORPHA, Pfeiffer. PI. ix., fig. v. 
Jaw slender, slightly arcuated, with about 85 flat ribs which indent 
both surfaces. 
Dentition, 35-1-35, with 18 laterals in a large specimen. In smaller 
specimens the number of teeth is sometimes as few as 22 with 10 
laterals. 
Central tooth with the base narrower in front, longer than broad; reflexed 
portion narrow, two-thirds the length of the base, with a minute lateral 
cusp on each side, the point moderate. Laterals with the inner side of the 
reflexed portion sinuated, outer side with a short, broad, emarginate process, 
the cutting points longer than on the central tooth. Marginals at first 
longer than broad, but near the exterior broader than long; the inner with 
a bidentate point; the outer also with a bidentate point, and one or two 
smaller ones outside it. 
Hab, Auckland (T. F, Cheeseman). 
