Marwicx.—Naticidae and Naricidae of New Zealand. 563 
to apertural margin where it meets lower groove, space between the two 
being occupied by lobe of "T ү; the inner margin o ри notice- 
Heh, 30mm.; diameter, 22 mm. : 
Localities.—165, White Rock River, Pareora (type); Target Gully, 
Oamaru; 1075, argillaceous sandstone, 12 chains north-north- n = 
Rangiriri Trig., Piopiotea West Survey District (Mohakatino base) ; 
Paparoa Rapids, Wanganui River; 475, Mount Harris, South ya el 
(= P. gibbosus and P. ovatus of Rue уам р. 64); 958, Rifle Butts, 
Oamaru, bed A, overlying Oamaru е (= P. ` gibbosus of Suter, 1921, 
p. 86); 458, Pareora (— P. gibbosus of Suter, 1921, p. 58); Awamoa (H. J. 
Finlay) ; Wharekuri ? horizon (H. J. Finlay). 
B 
Uber sagenus (Suter). (Plate 58, figs. 5, 6, 8.) 
1917. Polinices Ar x sagenus Suter, N.Z. Geol. Surv. Pal. Bull. 5, p. 10, 
pl. 3 
The holotype ы a widely open umbilieus which reaches up to apex of 
shell, but no other specimen has been seen which agrees exactly with this 
shell The large species, so common in the Lower Wanganuian beds at 
Waipipi, Hawera, Waingongoro, &c., and identified by Suter (1921, p s 
this paper named U. waipi iensis ; while it resembles sagenus in 
bibend она its shape is dd different. The most important 
difference, however, is in the inclination of the outer lip. In U. waipipiensis 
З is inclined at about 26° from the vertical, while in U. sagenus the angle 
s 37°. 
The specimen figured on Plate 58, fig. 6, is a topotype of U. sagenus, and, 
as may be seen, has the same outline and same. disposition of callus. The 
inclination of outer lip is also about 37^ from the vertical. There can 
therefore be little doubt that the two shells are conspecific. One important 
difference exists, however: in the type specimen the umbilicus is wide and 
deep, extending almost to the spire; in the other it is quite shallow, and 
when the shell was a quarter of a whorl younger must have been completely 
closed. The only other specimen seen which agrees with these two in 
outline, aperture, and callus is from Trelissick Basin. In this specimen 
but there is a very small chink at Жор penetrating Pas ue n in 
Despite these Mtem the actual appearance of the allus 
is similar in all cases, and with the great inclination of эй lip justifies 
specific recognitio 
Localit ies. 165, White Rock River, Рагеога ; 226, Porter and Thomas 
Rivers, Trelissick Basin. 
Uber chattonensis n. sp. (Plate 58, fig. 3.) 
Shell fairly large, ovate; spire sharp, about one-third height of aperture 
(including callus) ; whorls 5, rapidly increasing, surface with growth-lines ; 
suture tangential; aperture semilunar; outer lip sinuous, slightly concave 
in middle, and retracted above to suture ; ; Inner lip with thick parietal callus 
nearly covering umbilieus (which, however, is penetrating), and cemented 
to parietal wall along its whole outer side ; umbilicus with funicle coalescing 
with callus, line of junetion not marked. by distinct groove. 
