Hurrox.—On New Zealand Land Mollusca. 198 
South Island.—Bealey (Haast). 
C. Ribs on upper surface arcuated. 
P. raPIRINA, Hutton (1882); P. coma, Trans..N.Z. Inst., xiv., p. 150; 
not of Gray. 
Ribs about 18 in the tenth of an inch. Horny brown, obscurely banded 
with reddish. Diameter ‘19 inch. Dentition, 18-1-18. Spire usually 
convex, but sometimes concave. 
North Island.—Auckland (Cheeseman, Gillies); Hawke’s Bay (Meinertz- 
hagen); Masterton and Wellington (T. W. Kirk). 
South Island.—Greymouth (Helms); Temuka (Chilton); Dunedin and 
Queenstown (F.W.H.). 
P. syLvia, Hutton (1888). 
Ribs distant, about 18 in the tenth of an inch; pale horny with thin 
bands of chestnut on the upper suface. Diameter :12 inch. 
North Island.—Auckland (Gillies); Horokiwi, Wellington. 
South Island.—Bealey (Haast). 
Smaller, paler, and with narrower whorls than the last species. 
P. recta, Reeve (1852); H. zeta, Pfeiffer (1851). 
Ribs about 28 in the tenth of an inch. Pale horny, banded and tessel- 
lated with rufous. Diameter :14 inch. Dentition, 15-1-15. 
North Island, —Petane, near Napier. 
South Island, —Greymouth (Helms) ; Oxford (Chilton) ; Bealey (Haast). 
P. BIconcava, Pfeiffer (1851). 
Spire deeply concave ; aperture higher than broad; ribs about 32 in 
the tenth of an inch. Diameter :17 inch. Animal and dentition unknown. 
North Island.—Thames, Auckland (Adams), a single specimen. 
D. With spiral grooves. 
P. ecEsTA, Gray (1849). 
Strongly spirally grooved, and with distant, irregular ribs. Reddish 
brown, sometimes mottled with yellowish. Diameter :17 inch. 
The animal and dentition are unknown. 
North Island.—Auckland (Greenwood, Cheeseman, Gillies). 
Genus Thera, Hutton. 
Animal and jaw as in Patula. Shell conical, high, perforate, hairy ; 
periphery angled. 
T. sripuLaTa, Reeve (1852); H. alpha, Pfeiffer (1851); H. eren, 
Reeve (1852) ; H. beta, Pfeiffer (1851). 
Ribs distant, about 14 in the tenth of an inch, and striated iki 
apex obtuse; umbilicus moderate. Yellowish brown, often marked with 
darker. Diameter -14; height -16 inch. Dentition, 12-1-12, 
North Island.—Petane, near Napier, 
18 
