MARSHALL AND Мовросн.— Some Tertiary Mollusca. 123 
Vexillum plicatellum n. sp. (Plate 12, fig. 3.) 
Shell small, shortly fusiform, aperture and canal longer than spire, 
whorls five and a ha lf, slightly shouldered, a little excavate above; suture 
not deep, rather widely margined below. Protoconch of about one and 
a half smooth whorls. Sculpture consists of axial riblets and fine spiral 
порой теру well developed on ропа, variable on the last, 
almost straight, narrowly callused, with four plaits, the lowermost small. 
Length, 7:5 тата, ; width, 4 mm. 
Туре to be presented to Wanganui Museum 
Locality : he eos immediately below the limestone, McCullogh’s 
ridge, Waihao River. 
The amelie consists of four specimens, one of which is rather more 
inflated than the others, and the uppermost plait on the columella is 
indistinct; the species is аа У nearest to V. aypicostatum Sut. 
Vexillum n. sp. from the same locality is listed in N.Z. Geol. Surv. Pal. 
Bull. No. 8, p. 66, and the above may be the species referred to. 
Verconella delicatula n. sp. (Plate 14, figs. 3, 4.) 
Shell small, slender, and narrowly fusiform, aperture and canal much 
longer than spire, attenuated, whorls eight or nine with low rounded 
shoulder about middle of whorls, between this and suture above haies. 
straight or slightly concave, and from shoulder to suture belo 
“last whorl below periphery rapidly contracted. Sutures ut diehi 
Seulpture— protoconch ‘of about two and a half smooth whorls, apex 
minute ; the following whorls with axial riblets and spiral threads, axials 
are tag marked cet lines throughout; spiral threads somewhat 
granular, on spire there are three stouter threads from s oulder to suture 
below, with one or two minute threads in grooves, above shoulder about 
seven smaller threadlets, in some a smaller and larger alternating, others 
uniform, on the last excluding those above shoulder and on beak there 
iac fine threads in interspaces. geb ure small, oval, continued into 
a long narrow canal, outer lip imperfect ; columella lightly callused, almost 
straight above, the long beak slightly twisted to the left. 
ength, 28 mm. ; width, 8 mm. ; length of aperture and canal, 16 mm. 
Locality : Greensands immediately below limestone, McCullogh's Bridge, 
Waihao River. | 
Type to be presented to Wanganui Museum. 
The material consists of two specimens, the outer lip of each somewhat 
imperfect, Its very slender form and sculpture readily distinguish it from 
Siphonalia excelsa Suter _ 
Latirofusus optatus п. sp. (Plate 12, fig. 2.) ! 
Shell small, fusiform, aperture and canal almost equals spire in length ; 
whorls about seven, “apical coil missing," convex, the last somewhat 
