Marwick.—The Struthiolariidae. 185 
sp., which Hutton did not separate from Zittel's S. canaliculata. The 
latter is easily distinguished by its robust form, strong square spiral cords, 
and deep flat interstices. The suture is situated in a wide canal, and in 
some cases a fourth rib appears low down on the penultimate whor 
Locality.—Zittel gives as the locality “ Awatere Valley," which is some- 
what indefinite, but Dr. J. A. Thomson collected two typical specimens 
from 858, “ below waterfall, Starborough Creek, lower end Awatere Valley." 
This is probably the type locality, and the species must be considered as a 
Pliocene one. 
Struthiolaria zelandiae Marshall and Murdoch, 1920. (Plate 15, figs. 17, 18.) 
1920. oar zelandiae ~~ and Murdoch, Trans. N.Z. Inst., vol. 52, 
130, pl. vii, figs. 1 
In this олы ап вес dui such types as S. canaliculata and 
S. acuminata is marked by the appearance of a strong н spiral 
cord in each of the interstices between the 4 primary spira here is also 
a tendency for the second and third primaries to divide; ‘and os this 
happens each part is often weaker than the secondaries. Thus the 4 iens 
of S. canaliculata may be represented by 7, 8, or 9 spirals in S. zelandia 
The holotype figured by Marshall and Murdoch belongs to the last kind. 
As most of the specimens are flattened by pressure, the figures of Marshall 
and Murdoch make this shell appear too broad; a side as well as a front 
view is therefore given on Plate 15, figs. 17, 18. The deep canaliculate 
suture shows that this species ga reached a gerontic stage. 
Localities.—Waipipi Beach, west of Wairoa Stream, ek rley (буре); 
876, mouth of Waihi Stream, ек» (M. Ongley) ce == S. б 
culata. of Suter, N.Z. Geol. Surv. Pal. Bull. No. 25); aio ee 
Waingongoro River, Taranaki (Dr. G. H. Uttley ues Ф {зле К). 
Struthiolaria acuminata n. sp. (Plate 15, figs. 11, 12.) 
1886. Struthiolaria sulcata Hector, Outline of N.Z. Geol., p. 50, fig. 6, No. 7 (not 
of 1873). 
1914. idee de sulcata Hutton: Chapman, Australasian Fossils, p. 200, 
fig. 103, F (not of Hutton or Jonas). 
Shell ici small, ovate, with acute turreted. spire longer than 
aperture. Whorls 6, gradually increasing ; sculpture, whorls immediately 
below apex convex and with spiral cords, third whorl bicarinate, keels being 
marked by 2 strong cinguli, on fourth and fifth whorls these become much 
stronger, raised and rounded, angle of shoulder has now developed strong : 
raised band so whorls are tricarinate, interstices being rounded and a little 
wider than арагы! ribs; on body-whorl are 5 strong raised rounded cinguli, 
the lowest near fourth and slightly weaker than the others; on base are 
4 strong spiral threads with wide interstices; the whole surface spiralled 
with fine obsolete threads, crossed by sinuous growth-lines ; suture situated 
in channel.formed by strong spirals, whorl being slightly depressed between 
top spiral and suture; aperture ovate, channelled above and produced 
below into very short canal ; ; outer lip reflexed, thickened, edge rounded, 
sinuosity very shallow; columella concave, ending in truncated beak, bent 
to right, inner lip with moderate regular callus equal in та to that of 
outer lip, and not ascending on body-whorl above outer 
Holotype in collection of the жы Zealand Geological Bary ey. 
Height, 43 mm, ; diameter, 26 mn 
