Manwick.—The Struthiolariidae. | 179 
Struthiolaria cingulata Zittel. (Plate 13, figs. 1, 9.) 
1864. ple mires cingulata Zittel, Reise der “ Novara," 1 Bd., 2 Abt., p. 35, 
15 Я 
pi. 19, 
1873. Struthiolaria Сани Zittel: Hutton, Cat. Tert. Moll., p. 11. 
1887. ducens mm Zittel: Hutton, Proc. Linn. Soc. N.S.W., ser. 2, 
vol. 1, p. 
1893. Struthiolaria cingulata Zittel, Macleay Mem. Vol., p. 6 
1914. ати cingulata Zittel: Suter, N.Z. Geol. i "Pal. Bull. No. 2, 
. 18 (not the specimen figured pl. 1, fig. 9). 
The figure Tee by Suter was drawn by Buchanan from Hutton's 
plesiotype from Patea. This shell belongs to the S. vermis group, and 
so is widely separated from Zittel's species. The latter's figure represents 
an individual with whorls much more convex than usual, but the angulation 
is ar eom in the text. The more common outline is shown in Plate 13, 
fip. 9. An examination of the aperture with its spreading callus on the 
body-whorl, and of the arrangement of the spirals, will show that the 
species is closely related to the convex variety of S. papulosa. 
Zittel gives Awatere Valley as the locality, but in this extensive district 
more than one horizon is represented. The specimens here placed under 
this species come from Starborough Creek, where the rocks are of Pliocene 
age. 
Suter quotes in his Aser (1914, p. 18) the S. cingulata figured in · 
Hector's Outline of New nd Geology. "This figure was drawn from the 
type of S. monilifera Suter, which was Hutton’s variety B of S. cingulata, 
but which belongs to a group different from Zittel’s species. It should 
therefore appear in the synonymy of S. monilifera, not of S. cing 
A comparison of Zittel's figure of this species with that published by Suter 
(drawn by Buchanan from Hutton's specimen) shows that there are 
important differences. The true cingulata has the inner-lip callus wide- 
spreading and thin on the parietal wall, then tapering rapidly below, with 
bs protuberance about -way down on the outside. The yis = is 
Although Zittel’s figure be. a shell with convex spire-whorls, the 
body-whorl is obsoletely bicarinate, while in his description (1864, p. 35) 
he says, “ Die Embryonalwinddungen sind gat са ubrigen dagegen 
stumpfkantig . . dieletzte Windung . . t mit zwei stumpfen 
Kanten versehen." 
No well-preserved replicas of Zittel's egre have been seen, but there 
is a common Struthiolaria from Awatere which corresponds with the 
description except that the angles are go blunt (see Plate 13, fig. 9). 
Perhaps the specimen handled by Zittel’s artist was one with exceptionally 
convex whorls, such as sometimes occur in S. papulosa, figured in Plate 12, 
fig. 2 
According to this interpretation, S. cingulata is closely related to 
S. cincta, differing in the presence of dide strong spiral cords, and 
the absence of tubercles on the shoulder 
