SILURIAN BIVALVED MOLLUSCA OF VICTORIA. 
American and British specimens. The previously-recorded 
horizons for the specific form are at the top of the Ordovician 
(Hudson River Group and the Caradoc series). 
The present variety is distinguished from the type species 
by its shorter and stouter form, and less pronounced nasute 
anterior extremity. 
Horizon and Locality.—Silurian (Melbournian). In the 
hard black shale, Domain-road, 8. Yarra; collected and_pre- 
sented by Mr. F. P. Spry. [7943.] 
Genus GuossiTEs, J. Hall, 1885. 
Glossites victoria, sp. nov. Plate VI., Fig. 79 
Description —Shell small, compressed, elongate ovate, 
narrow in front, broad behind. Hinge line slightly curved. 
Beaks sub-anterior, depressed. Posterior margin strongly 
curved; ventral margin gently curved and truncately rounded 
at the anterior extremity. . Umbonal convexity gradually be- 
coming more depressed on approaching the postero-ventral 
margin. Shell texture thin; surface concentrically wrinkled 
with irregular lines of growth. 
Measurements. Height, 9.5 mm.; length, 16.5 mm.; depth 
of valve at umbo, 5 mm. 
A ffinities—The only form of this genus with which the 
above species can be at all closely compared is G. depressus, J. 
Hall,* from the Chemung Group of Ithaca and Elmira in the 
State of New York. That species, however, has a more gener- 
ally depressed shell, and the beaks are more acute. 
Horizon and Locality—Silurian (Yeringian). Croydon, 
near Lilydale; presented by Mr. Thos. Warr.  [7944.] 
Genus GonropHora, Phillips, 1848. 
Goniophora australis, sp. nov. Pl. VI., Fig. 80. 
Description—Shell sub-ovate, elongate; length about 
twice the height. Beaks large and anterior, strongly incurved 
toward the ventral margin. Anterior extremity of the shell 
narrow, Hoe) broad behind. Umbonal ridge prominent and 
sharp (in the type-specimen the posterior extremity of the shell 
is bent forward against the umbonal ridge). Basal edge 
sinuously curved; rising up to, and terminating just below, the 
beaks, at a sharp angle. Surface ornamented with numerous 
bifurcating lines of growth. 
* Pal. N. York, 1885, Vol. V., Pt. I., Lamell. Il., p. 496, Pl. XL., Figs. 15, 75 PI. 
XCVIL., Fig. 12. 
