TERTIARY MOLLTJSCA OE VICTORIA. 
Dimensions. — Holotype. — Length, 18 mm. (approx.) ; breadth, 6.5 mm. ; 
length of aperture, 4.8 mm. ; of canal, 8.0 mm. 
Locality. — Land-slide about three-quarters of a mile west of the Gellibrand 
River and half a mile from the beach, Princetown district. The material has 
slipped from a bed in the immediate vicinity. 
Geological Horizon. — Barwonian (Oligocene or Miocene). 
Genus ETREMA Hedley 1918. 
Etrema morningtonensis, sp. nov. 
Plate XIX, figs. 4, 4a. 
Holotype, Reg. No. 13690. Balcombe Bay, Mornington. 
Description. — Shell smooth, rather solid, turreted, fusiform. Protoconch 
of two rounded whorls. Other whorls, five, convex, shouldered at posterior 
third, abruptly descending to posterior suture ; suture well impressed. Whorls 
obliquely costate, eighteen narrow costae on penultimate whorl, interspaces 
wider than costae and faintly lirate. Spiral ornament consists of regularly- 
spaced, somewhat distant lirae, four on penultimate whorl ; small granules 
form where lirae traverse costae, lirae on anterior canal being more pronounced. 
Aperture ovate ; sinus well-defined ; outer lip with distinct varix ; columella 
with thin callus ; canal short, truncate, a little expanded at front, twisted, 
recurved. 
Dimensions. — Holotype. Length, 10 mm. ; breadth, 3 mm. ; length of 
aperture and canal, 4.5 mm. 
Locality. — Balcombe Bay, Mornington. 
Geological Horizon. — Balcombian (Oligocene). 
Genus GURALEUS Hedley 1918. 
Guraleus cuspidatus, sp. nov. 
Plate XIX, figs. 5, 5a. 
Holotype, Reg. No. 13691. Balcombe Bay, Mornington. 
Description. — A small, graceful, elongately fusiform, turreted shell with 
acute spire. Protoconch, a smooth, acute, apical series of four convex whorls 
ending in a sharp point. Spire whorls four, graded, shouldered at posterior 
third, abruptly descending to well marked posterior suture ; whorls medially 
convex. Posterior spire whorls ornamented with distant, acute, oblique 
riblets, which are not continuous from whorl to whorl, and fade away on 
anterior portion of penultimate whorl. Spiral ornament consists of close-set 
fine lirae, interspaces striate. Body whorl elongated, somewhat inflated, with 
a few rudimentary riblets on shoulder and a well-defined varix a little removed 
from margin of outer lip. Spiral lirae similar to those on spire, save that those 
on spire are oblique and coarser. Area posterior to shoulder of whorls is plain. 
Aperture elongate-oval ; outer lip smooth, bevelled, and with a small sub- 
sutural sinus ; columella medially concave ; canal open at front, recurved. 
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