SILURIAN BIVALVED MOLLUSCA OF VICTORIA. 
has been good enough to verify these references, thinks that in 
all probability the original manuscript of Murchison was 
abbreviated before publication. 
Cardiola cornucopia! (as C. interrupta ) lias a recorded 
range in Britain from the Llandeilo to the Upper Ludlow 
beds.* 
Horizon and Locality . — Silurian (Melbournian). In brown 
and blue shale from the Yarra Improvements, S. Yarra, col- 
lected by Mr. F. Spry and the author. Also in brown sand- 
stone, Moonee Ponds Creek, Flemington (“ Royal Park ”). Coll, 
by Geol. Surv. Viet. [7878, 987.] 
Family Fraecardiidse. 
Genus Panenka, Barrande, 1881. 
Panenka gippslandica, McCoy, sp. 
Cardinm gippslanclicum , McCoy, 1879, Prod. Pal, Viet., 
Decade VI., p. 23., PI. LVI. 
Observations . — In describing this fossil under the generic 
name of Cardium, McCoy wrote : — “ Although not quite satis- 
fied with the generic reference to Cardium, still it is congeneric 
with the previously described Upper Silurian Cardiums.” At 
that time the genus to which we now' refer it had not been estab- 
lished, but in 1881 Barrande separated those forms with ex- 
panded superior margin and strong radial and concentric 
ornament from Cardiola, Broderip, to which the Upper Silurian 
“Cardiums” were afterwards referred, and placed them under 
the above generic name. In Victoria, the genus Panenka is 
found associated with Silurian and occasional Devonian forms, 
in one of the highest group of the Yeringian beds; it is 
characteristic of the Silurian and Devonian in Bohemia (stages 
E to G), and of Devonian beds in Devonshire and N. America. 
Horizon and Locality . — Silurian (Yeringian). Mt. Mat- 
lock; near Starvation Creek; and Russell’s Creek, Gippsland. 
[7486 (type), 7487-88, 2097.] 
Panenka planicosta , sp. nov. PI. I., Fig. 13. 
Description . — Shell minute (for this genus), sub-orbicular, 
oblique; cardinal alas conspicuous; hinge line nearly straight; 
ventral border well-rounded, truncated in front and produced 
* R. Etheridge, Foss. Brit. Ids., Palaeozoic, Vol. I., 1 888, p, io2. 
