NEW SPECIES OF TERTIARY MOLLUSCA FROM VICTORIA 121 
elegans Chapman, but the whorls are not rounded anteriorly as in that 
species, the riblets are much finer, more oblique, and the spirals less numerous. 
Locality. — Spoil heap at brown coal mine, Altona; several examples. 
Geological Horizon. — Balcombian. 
Holotype. — No. 14094. Paratype. — No. 14095. 
Genus FILODRILLIA Hedley. 
FilodrilUa turrita, sp. nov. 
Plate XIV, Fig. 4. 
Shell fusiform, turreted. Protoconch with two small, smooth, convex 
whorls, the initial portion oblique, the anterior half of second whorl costated. 
Adult whorls seven, of regular increase; earlier whorls acutely angular with 
a series of coarse, blunt tubercles on the angulation ; later whorls angulated, 
almost right-angled at the periphery; the keel consists of two close-set 
granulose lirae; the anterior half of the whorl, which is a little contracted at 
the suture, carries three granulose lirae on the penultimate, with a very fine 
line in the interspaces ; the posterior half is flattened, and bears two or three 
fine spiral lines ; the suture is marginate. The body whorl is acutely angled, 
and similarly ornamented in front with coarse and fine lirae alternating 
which extend to the extremity of the canal. The whole shell is crossed 
axially by close-set, regular growth lines, oblique on the anterior portion of 
the whorls, and crescentric on the fasciole, thus outlining the shape of the 
sinus. The intersection of transverse and spiral lines gives the shell a 
granulose, network appearance. Aperture oval, slightly angled at the peri- 
phery of the whorl, and contracted at the anterior; outer lip thin, lirate 
within; sinus wide and moderately deep; columella excavated; canal short 
and open, a little bent. 
Dimensions. — Holotype. Length, 15 mm.; breadth, 5 mm.; length of 
aperture and canal, 6 mm. 
Observations. — This fossil is classed as Drillia sp. in the Dennant Collection 
at the National Museum, and is fairly common at Balcombe Bay, Grice’s 
Creek, Muddy Creek, and Lower Moorabool, in addition to Altona. It 
appears to have no close affinity with any other described species, recent or 
fossil. It has some features in common with the recent F. stadialis Hedley, 
and F. steira Pledley, but they are not sufficiently close to cause confusion 
with those species. 
Locality. — Spoil heap at brown coal mine, Altona, near Williamstown. 
Geological Horizon. — Balcombian. 
Holotype. — No. 14096. 
Genus MITRITHARA Hedley. 
Mitrithara megale, sp. nov. 
Plate XIV, Fig. 2. 
Shell large for the genus, thin, cylindro-fusiform. Protoconch of two 
small, smooth, convex whorls, the earlier one the larger and slightly project- 
ing. Adult whorls six, a little convex and slightly shouldered at the posterior 
suture, the latter well impressed. The whorls are spirally lirate throughout, 
about ten rounded spirals on the penultimate whorl, and about twenty-six 
