Marwick.—WNaticidae and Naricidae of New Zealand. 555 
Localities.—Greensand, Waihao Downs; 164, Greensand above coal- 
beds, Kakahu, South Canterbury (— P. ovatus and P. huttoni of Suter, 1921, 
p: 2) ; 176, sandstone above coal-beds, Black Point, Waitaki Valley 
ovatus of Suter, 1921, p. 12); i Hampden (= Ampullina waihaoensis 
of. Marshal 1923, p. 117 
Distin guished from N. waihaoensis by narrower shape and more restricted 
umbilicus. 
Natica ы sutherlandi n. sp. (Plate 56, fig. 1.) 
hell large, broadly ovate; spire low and with almost straight outlines ; 
whorls 6, slightly depressed in front of suture; protoconch nucleus very small ; 
suture versa ntial; surface with sinuous growth-lines, stronger above; 
aperture semilunar ; outer lip concave, strongly retracted to suture, inclined 
about ; 30° from vertical ; inner lip with moderate callus on parietal w wall ; 
umbilicus well cape m with well-marked funicular ridge and circum- -umbilical 
limb which forms a prominent angle where it meets anterior margin. 
Type in collection of Mr. - A. Sutherland, Wanganui. 
Height, 32 mm. ; diamete m. 
Localities — Chatton Creek, Gore; ? Trig. M, Totara, small specimen 
= Р. amphialus of Suter, 1921, p. 88). 
Natica (Magnatica) approximata (Suter). (Plate 56, fig. 3.) 
1917. rr Satie approximatus Suter, N.Z. Geol. Surv. Pal. Bull. 5, 
2, fig. 5 
The type of pur approximatus is in an extremely poor state of pre- 
servation, squeezed out of shape, and with the front half of the shell missing. 
It should never have been described. Tonnie, in the same doloron 
is a fairly well-preserved shell, squeezed in the same manner and undoubtedly 
of the same species. This was identified by Suter as Polinices huttoni (1921, 
ose relationship exists with P. planispirus Suter (now N. suteri), 
towards aperture and slightly upwards. There is a low funic ridge 
in the umbilicus, which is moderately open, aid {с са by an obsolete 
arm not definitely marked off. 
Localities.—486, Wharekuri greensand ; Kakanui байз (Н. J. Finlay). 
Natica (Magnatica) suteri nom. "€ (Plate 56, figs. 2, 5, 6.) 
1917. Ti planispirus Sute Geol. Surv. Pal. Bull. 5, p. 10, pl. 3, 
. 1, 2 (not UN. dpi rd of f Phil ps). 
Suter uar identified this species w^ Polinices huttoni, amay 
the specimens from the Waitaki Valley. will be shown below t 
P. huttoni = P. gibbosus, and is not an openly ано shell like this one. 
In the original Pie ription no mention is made of the low funicular ridge in 
the umbilicus, but Suter's fig. 1 seriis чя The specimens from locality 476, 
at least, are of variable shape ; have an almost flat summit like the 
type, others have a fairly high a pm Plate 56, fig. 5). The size of the 
umbilical opening and the strength of the funicular and circum-umbilical 
ridges also are inconstant, so that more specific divisions may be required. 
At Trig. Z, Otekaike, vba these shells are common, occur many large 
calcareous Naticid opercula which must belong to them, for there is no other 
shell to which they can be attributed. According to our present system 
