120 NEW SPECIES OF TERTIARY MOLLUSCA FROM VICTORIA 
anterior portion spirally lirate. Spire whorls three, exclusive of the proto- 
conch, protuberant and slightly angled a little above the anterior suture; 
whorls spirally finely lirate, about ten on the penultimate, and rendered 
granulose by the intercrossing of numerous fine axial threads ; a small spiral 
in the interspaces. Body whorl similarly sculptured. Varices four; no 
intervariceal nodulations, but the space is occupied by about six feeble axial 
costae, more pronounced in some examples than in others. Body whorl 
abruptly descending to the base. Aperture ovate ; columella strongly arched, 
furnished with tooth-like ridges, varying in size, for its whole length; outer 
lip with about fifteen strong, close-set denticulations within. Canal very 
short, bent, and reverted. 
Dimensions. — Holotype. Length, 15 mm.; breadth, 9 mm.; length of 
aperture and canal, 9 mm. 
Observations. — This species bears considerable resemblance in outline to 
Lampusia ovoidea Tate, of the younger beds at Muddy Creek, but differs 
in the absence of intervariceal nodulations, the sculpture is less coarse, and 
the denticulations within the outer lip and the tooth-like ridges on the 
columella are both coarser and more numerous. This species may be the 
ancestor of the younger fossil. The absence of the apex in the several 
examples examined is suggestive in the light of Finlay’s remarks relative to 
Austrotriton (Transactions of N.Z. Institute, vol. 62, p, 8), wherein he speaks 
of the “initial whorl as quite irregular in shape, roughened and markedly 
differentiated in texture from the polished succeeding whorl . . . the whole 
appearance is that of a scar left by the loss of some integral part.” 
Locality. — Grice’s Creek, near Mornington. 
Geological Horizon. — Balcombian. 
Holotype. — No. 14093. 
Family TURRIDAE 
Genus ETREMA Hedley. 
Etrema turrita, sp. nov. 
Plate XIV, Fig. 3. 
Shell small, fusiform, turreted, solid; protoconch of two smooth convex 
whorls; adult whorls five, sharply angulate; anterior two-thirds of spire 
whorls vertical whilst the posterior is flattened, almost at right angles 
to each other; the posterior is not lirate; the anterior is crossed by numerous 
fine, oblique, axial riblets. The posterior whorls show one distinct 
spiral on the front, the antepenultimate two, and the penultimate whorl a 
suspicion of a third on some examples; the spirals cross the riblets and are 
rather acute; they are situated on the lower half of the whorl near the 
anterior suture ; where they cross the axial riblets they are somewhat granulate. 
On the periphery of the body whorl there are four or five spirals; they are 
continued on the base and the canal but are finer and closer. The shell is 
sharply contracted at the base, the outer lip strongly inflected, and swollen 
behind; sinus deeply incised, U-shaped, and effuse exteriorly; aperture 
narrowly ovate; columella nearly straight, smooth; canal short, a little effuse 
anteriorly. 
Dimensions. — Holotype. Length, 6 5 mm.; breadth, 2 25 mm. 
Observations. — This species bears some resemblance to Etrema pseudo- 
