184 Transactions.—Zoology. 
Operculum orbicular, thin, of many slowly increasing whorls ; nucleus 
central; horny, covered outside by a thin polished calcareous callus, 
thickened round the margin, and with a prominent centre. 
Hab. Horokiwi, Wellington. 
LEPTOPOMA (?) PALLIDA, n. $. 
Shell conical, sub-perforated ; pale brown. Spire acutely conical, the 
apex obtusely rounded; whorls 54, rounded, the last rather flattened at 
the base, covered with a pale, thin, epidermis, which is rather closely 
longitudinally plaited. The first two whorls show delicate oblique growth 
ines ; suture impressed ; umbilicus very narrow, usually covered, not 
keeled ; aperture slightly oblique, sub-circular; peristome thin, regularly 
arched, margins not meeting, columellar margin slightly reflexed. Oper- 
culum (?). Height :2; diameter ‘18 inch. 
Hab. Auckland (T. F. Cheeseman). 
In the absence of the operculum, the true generic position of this shell 
cannot be determined. * 
EXPLANATION OF PLATES IX.—XI. 
PrarE IX. 
Helix kivi. Teeth x 470 times. 
Placostylus hongi. Teeth x 160. 
Patula coma. Teeth x 470. 
»  buccinella. Teeth x 470. 
i 
dà 
> 
PR seh Rome bah 
E 
Ri 
3 
8 
3 
5 
x 
Ha 
3 
Gerontia pantherina. Teeth x 470. 
Charopa planulata. ‘Teeth x 470. 
ozk 
S 
$ 
= 
$ 
oe, 
H 
È 
x 
E 
lac; 
d 
3 
= 
3 
E 
3. 
3 
5 
rj 
3 
E 
x 
ES 
Patula portia. Teeth x 470. 
LI 
x 470. 
Paryphanta phlogophora. Teeth x 470. 
NH eH Adduynnwonw 
^i 
TE: 
S 
& 
: 
a 
E 
È 
5 
x 
Ha 
S 
