SILURIAN BIVALVED MOLLUSCA OF VICTORIA. 
ComMPARATIVE TABLE OF 
VicroRIAN Species oF SiruriAn PELEcyrpopa— 
continued, 
Australian Species. 
P. cf. tenuistriata, J. Hall (Mel- 
bournian). 
Lunulicardium antistriatum,, Sp. NOV. 
(Yeringian). 
Mytilarca  acutirostris, Sp. Novy. 
(Yeringian). 
Conocardium bellulum, Cresswell sp. 
( Yeringian). 
Actinopteria asperula, McCoy, sp. 
var. croydonensis, Nov. (Yerin- 
olan). 
A. heathcoticnsis, sp. nov.  (Mel- 
bournian). 
Modiolopsis melbournensis, sp. nov. 
(Melbournian). 
M. nasuta, Conrad sp., var. aus- 
tralis, nov. (Melbournian). 
Glossites victori@, sp. nev. (Yerin- 
gian). 
Goniophora australis, sp. nov. 
(Yeringian). 
G. cf. glaucus, J. Hall. sp. (Mel- 
bournian). i 
Paracyclas siluricus, sp. nov. (Mel- 
bournian). 
Related Species. 
P. tenuistriata, J. Hall. Hamilton 
group; North America. 
? Cardium striatum, Sowerby. 
to Up. Ludlow ; Great Britain. 
Bala 
(i trigona, Goldfuss sp.. Mid. De- 
vonian ; Germany. 
| M. chemungensis, of Salter non 
| Conrad. Wenlock series; Wales. 
C. dipterum, Salter sp. Up. Ordo- 
vician ; Scotland. 
A. asperula, McCoy sp. Up. Ordo- 
vician ; Wales. 
A.  hirundella, Whidborne. De- 
vonian ; England. 
A. ventricosa, Goldfuss sp. De- 
vonian ; Germany. 
M. solenoides, Sowerby sp. Up. Lud- 
low; England. 
M. nasuta, Conrad sp. Up. Ordo- 
vician; North America and Great 
Britain. 
Glossites depressus, J. Hall. Chem- 
ung group; North America. 
G. cymbeformis, Sowerby sp. Si- 
lurian; British Islands. 
G. consimilis, Billings. 
Nova Scotia. 
Silurian ; 
G. glaucus, J. Hall sp. Hamilton 
group ; North America. 
Paracvclas lineata, Goldfuss sp. 
Devonian ; Germany. 
P. bulla, McCoy sp. Up. 
Ludlow ; 
| England. Silurian;  Treland. 
|| P. elliptica, J. Hall. Corniferous 
limestone and Hamilton group ; 
| North America. 
No attempt is here made to subdivide the two series 
of the Victorian Silurian, designated by Prof. J. W. Gregory as 
Melbournian and Yeringian.* It was evident, during the pro- 
gress of the present work, nevertheless, that several horizons can 
eventually be defined, after further detailed work has been done, 
by conjoining the stratigraphical and paleontological data. 
* Proc: Roy. Soc, Vict, Vol. XV., Pt. 11; N.G:, 1903, pp, 17%, 172, 
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