220 
From Waratah North. 
No. 257, from Bald Hill, Waratah. North (or Tarwin South), is an imper¬ 
fect specimen of Diplogmptus sp. 
From Grice’s Creek, Mornington, Nos. 258-270. 
The specimens, which occur in boulders, in no instance are sufficiently 
well preserved to admit of specific determination. Those numbered 258, 
261, 262, 264, 266, 267, belong to the genus Climacograptus , and quite possibly 
all represent the same species. No. 261 shows a Diplograptus as well. 
The age indicated is either lower silurian or upper ordovician, or, as 
the Survey Map of Victoria would show it, either the lower part of the upper 
silurian, or upper part of the lower silurian. 
University, 25th June, 1903. 
From Balnarring, Nos. 271-281. 
The specimens are identified as follows :— 
Tetragraptus approximatus, Nicholson. Specimens 271 and 275. 
Tetragraptus quadribrachiatus , J. Hall. Specimens 272, 276, and 280. 
Tetragraptus fruticosus, J. Hall. (?) Specimen 274. 
Didymograptus cf. pritcliardi. Specimen 281. 
Ostracoda. Specimens 277 and 278. 
Tetragraptus quadribrachiatus , J. Hall. 
The remaining specimens are indeterminate. 
T. approximatus is a new record for Australia, in fact I am not aware of its 
occurrence outside of Canada, where Nicholson described it in 1873. The 
specimen queried as T. fruticosus shows the sicula and a couple of thecas only, 
but I fancy the record is correct. What I have compared with Didymograptus 
pritchardi , a Lanceheld species, is very indistinct, and I cannot make out the 
thecal characters clearly, so that its value is not great. 
The age of the containing rocks is clearly lower ordovician, and if the 
identification of T. fruticosus is correct, it is Bendigonian. In any case it 
cannot be younger than Lower Castlemaine. 
The finding of these organic remains in the Mornington Peninsula is of 
considerable interest, as by Selwyn the age was regarded as silurian (“ upper 
silurian ”), the conclusion being arrived at only on general character of the 
rocks and the finding of some imperfect remains in Sandstone Id., off Hastings. 
Graptolites of doubtful age, but in any case younger than these, have previously 
been recorded from the supposed eocene conglomerates of the district, but 
the present collection apparently definitely settles the age of the series. 
University, 25th June, 1903. 
[From Bull Dog Creek, near Dromana, Nos. 282-314, 327-335. 
^understand the locality from which these specimens came is in the same 
district as the preceding. The species present represent the same fauna as 
that exhibited by the specimens from Balnarring dealt with above, and afford 
further confirmation of the occurrence of lower ordovician rocks in the district, 
while the Bendigonian age is now definitely fixed. 
