562 T'ransactions. 
Surv. loc. 81) have a Wanganuian fauna; this type of Uber belongs 
to a lower horizon, and probably came from the “ Taipo" beds in the 
neighbouring district. 
Uber mucronatus n. sp. (Plate 58, fig. 7.) 
Shell of moderate size, oval ; spire short, acute or often mucronate ; 
outer Jip not greatly inclined ; apertural callus large, sealing umbilicus, 
lower end of callus lobed and bounded by very deep groove on apertura 
side; sometimes when the callus is not fully developed there remains 
slight umbilical opening which resembles that of U. propeovatus. 
ype in collection of New Zealand Geological Survey. 
Height, 29 mm. ; diameter, 23 mm. 
Localities.—1037, Hurupi Creek, Palliser Bay (type); 882, argillaceous 
sandstone, Waitomo ; 862, head of Waimata River, Gisborne; 1121, 
Wharekahika River, East Cape; Muddy Creek, Arowhana ; 1156, Awatere 
Mouth, East Cape; upper grey marls, south cliff, north branch of Dee 
River (= P. gibbosus of Suter, 1921, p. 82). 
Shell of moderate size, elongate, ovate ; spire high, conic, slightly 
mucronate ; apertural callus well developed, filling umbilicus with a some- 
what narrow lobe bounded by deep broad groove which lies very close to 
inner margin of aperture, but is not quite parallel to it; outer lip slightly 
retracted to suture. 
Type in collection of New Zealand Geological Survey. 
Height, 31 mm. ; diameter, 23 mm. 
Localities. —1136, Mangare Road, near Mangaone Stream, Upper Waitara 
Survey District (type); 1128, Putiki Stream, Tongaporutu River; 1113, 
Rapanui Island, Taranaki (L. I. Grange). 
above to suture, but otherwise straight ; apertural callus thick, completely 
covering umbilicus; a sha ow groove ascends from base of callus near 
n 
argin. 
Type in collection of New Zealand 
Height, 15 mm. ; diameter, 13 mm. 
Localities.— 1029, one mile north-north-east of limestone-crushing plant, 
Alexandra Survey District ; Pourakino, Riverton (H. J. Finlay). 
The disposition of the callus is much the same as that of U. unisulcatus, 
but the shell is more globose and the protoconch as well as the whole shell 
is much smaller. _ There is also considerable resemblance to U. mucronatus, 
which, however, is larger and has a more nearly vertical outer lip. 
Geological Survey. 
Uber lobatus n. Sp. (Plate 58, fig. 2.) 
Shell of moderate size, elongate, ovate ; spire acuminate; apertural 
callus comparatively narrow, but sealing umbilicus by a lobe bounded 
below by deep groove which is inclined at about 45° to apertural margin ; 
somewhat higher there js à wider and shallower groove at right angles 
: 
