184 Proceedings of the Royal Society of Victoria. 



graptidce, the characters of which are too obscure to permit of 

 identification. 



Tungamah. 



No older rocks are mapped in the locality from which these 

 specimens came. They are more conspicuous than those from 

 the former locality, but the finer characters are in great part 

 obscured through weathering. There are several which appear 

 to be new, one perhaps generically, but they are too obscure to 

 speak of with any definiteness. I query some of the species, as 

 they are identified from the form and dimensions of the polypary 

 only, the hydrothecae not being visible. The following forms 

 occur: ? Dicellograptus sextans, J. Hall; Dicellograptus sp. ; 

 ? Dicra>iograptiis ramosus, J. Hall; Diplograptus pristis, Hisinger, 

 and Glossograptus, sp. 



Walwal Creek. 



The district from which these specimens come is coloured as 

 granite on the map. They are preserved merely as a glaze on 

 the rock and, though unable to make camera drawings of them, 

 I made careful sketches and measurements of those I have 

 identified. Several forms of Diplograptida were too badly pre- 

 served to speak of definitely, but 1 have made out the characters 

 of the following : Dicellograptus anceps, Nich. ; Diplograptus 

 pristis, His. ; Diplograptus truncatus, Lapw. ; Climacograpius 

 bicornis, J. Hall. 



It has of course long been known that the boundaries of the 

 geological formations as laid down on the present Victorian map 

 needed revision, especially in the area under notice, and the com- 

 pilation of a new map by Mr. Arthur Everett from recent surveys 

 is practically completed. 



The age of the Lower Palaeozoic rocks of North-eastern Victoria 

 has, in the absence of fossils, been a matter of considerable doubt. 

 Mr. A. W. Howitt in his earlier papers considered the balance of 

 evidence in favour of Lower Silurian (Ordovician). The rocks 

 show, according to Mr. Howitt, great structural and lithological 

 resemblances to those to the east of the Snowy River, and from 



