160 Transactions. 
and the nucleus apical. A fossil specimen is chosen for the type on account 
of the large series available. 
I name this handsome species after my friend Dr. P. Marshall. 
ERATO. 
Erato neozelanica Sut. (Plate 10, fig. 4.) 
E. neozelanica Sut., N.Z. Geol. Surv. Pal. Bull. No. 5, pt. 1, p. 12, 
pl. iii, figs. 6, 7. 
The holotype was collected’ by Marshall in the Target Gully shell-bed, 
Oamaru, and presented to the Otago University Museum. Another speci- 
men is now recorded from the sandy clays in the bed of the Awamoa 
Stream, near Oamaru. It is rather smaller than the type: length, 11 mm. ; 
width, 7mm. It has also been found to occur in the railway ballast-pit 
near to the Okehu Station (a single specimen — length, 12 mm. ; width, 
7mm.) This horizon appears to be а little above the Rotella bed of Park 
as exposed in the coastal cliff at the boat-sheds, Nukumaru. The species 
would appear to be rare, but has a fairly wide distribution. 
In the Suter collection are two small specimens labelled ** E. neozelanica, 
* paratype, Target Gully shell-bed, Oamaru." They are pygmies compared 
with the typical form. One specimen is certainly fully adult. They appear 
e to be quite distinct from neozelanica, and I treat them as an 
undescribed species. 
Erato senectus n. sp. (Plate 10, figs. 5, 6.) 
Shell small, pyriform, without sculpture, spire about three whorls, short 
with blunt apex, coated with enamel, sutures lightly indicated, last whorl 
large, almost uniformly curved to the short beak, outer lip broad and 
rounded, exteriorly forming a ridge, on anterior area a few teeth-plications . 
passing across it, its lower surface crossed by ten to a dozen stout teeth. 
Aperture narrow, oblique, almost uniform in width; «columella a little 
excavated anteriorly, with three or four small plications, and a few 01: 
numerous denticles above. 
Length, 4-5 mm. ; width, 3:25 mm. 
Locality, Target Gully shell-bed, Oamaru. Collected by Dr. Marshall. 
Type in the Wanganui Museum, Suter collection. 
Differs from N. neozelanica Sut. in its much smaller size, less narrowly 
produced anteriorly, and the outer lip heavier and more strongly plicated. 
EOM 
Es 
on 
