D 
TO 
Hurtron.—On New Zealand Land Shells. 177 
PHRIXGNATHUS PHRYNIA, N. 8. 
Shell minute, conoidal, umbilicated, the epidermis plicated: colour pale 
horny, radiately streaked with rufous. Spire conoidal, acute ; periphery 
obtusely angled; suture impressed ; whorls 5, rounded, smooth, the 
epidermis rather distantly wrinkled ; umbilieus narrow, open ; aperture 
slightly oblique, rotundly lunar; peristome thin, the margins approxi- 
mating; the columellar margin scarcely reflected. Greatest diameter ‘1, 
least *09; height *09 inch. 
Hab. Wanganui (T. W. Kirk). 
Very near P. celia, but differs in the plaited epidermis. 
PHRIXGNATHUS ARIEL 
Shell small, dodi) sid shining, finely ribbed, subperforate ; 
colour pale yellowish horny. Spire conoidal, depressed, with 5 slowly 
increasing whorls, the last obscurely carinated ; finely striately ribbed, the 
base delicately spirally striatulated ; suture impressed; umbilicus covered; 
aperture oblique, lunate ; peristome thin, the columellar margin reflected. 
Greatest diameter ‘18, least ‘12; height ‘1. 
Hab. Auckland (T. F. Cheeseman). A single specimen only. 
Distinguished from the other species of the genus by being finely ribbed ; 
and from H. pecilosticta by the columella not being thickened, and the suture 
not margined. From H. granum it differs in colour, and in having the 
umbilicus covered. 
Jaw as in P. celia. Dentition, 82-1-82. All the teeth longer than 
broad, and the reflexed portion very short. Central tooth unicuspid ; 
laterals and marginals bicuspid, all with minute points. 
HRIXGNATHUS TITANIA, D. 8. 
Shell globosely conoidal, umbilicated, striated ; pale horny irregularly 
banded with chestnut. Spire conoidal, rather IRE ; periphery obtusely 
carinated ; suture margined ; whorls 5-6, rounded, very finely striated ; 
umbilicus broad, perspective; aperture very slightly oblique, subcircular ; 
peristome thin, the margins closely converging; columellar margin not 
reflected. Greatest diameter ‘14, least ‘12; height «10 inch. 
Hab. Dunedin (F. W. H.). 
Differs from P. sciadium in the higher spire and the obtuse keel. 
PHRIXGNATHUS (?) HAASTH, n. 8. 
Shell minute, depressed, smooth, shining, umbilicated; colour horny, 
usually with irregular radiating bands of reddish brown and white. 
Spire conoidal, depressed; whorls 44, slowly increasing, rounded, the last 
subcarinated, obscurely distantly striated; suture impressed; umbilicus 
moderate, pervious, showing the penultimate whorl ; aperture subvertical, 
lunately subcircular ; peristome thin, arched, the margins not approaching. 
Greatest diameter ‘12, least ‘1; height ‘07 inch. 
