Geology of Castleinaine, &c., with List of Minerals. 75 



With regard to the Lancefield beds, the plentiful occurrence of 

 highly compound forms would lead us, by analogy witli the 

 succession in localities in the northern hemisphere, to place them 

 below the lowest of all the beds dealt with. Fortunately we 

 have evidence of a stronger character which points in the same 

 way. A striking slender bifid graptolite occurs commonly at 

 Lancefield, and I have found specimens at Daphne Reef, and 

 Derwent Gully. Clonograptns occurs, at any rate as high as the 

 Burns' Reef beds in Castlemaine, but is rare, while several 

 species occur at Lancefield. The Bendigo Museum contains a 

 fragment labelled "Bendigo," which is apparently the gigantic 

 species described by Mr. G. B. Pritchard as Temnograptus 

 viagnificus from Lancefield, where it is common. In a paper 

 read at a recent meeting of this Society, Mr. Pritchard records 

 Tetragraptus quadribachiatus from the same locality. It occui's 

 in the T. friiticosus zone, is very abundant in the Wattle Gully 

 beds, and occurs, though rarely, as high as the T. caduceus zone. 

 The genus Fhyliograptus is not represented in the Lancefield beds, 

 but is recorded by Professor McCoy not far to the westward, 

 and on examining the specimens from this locality, in the 

 National Museum, I detected one or two small specimens of 

 T. fruticosus on one of the slabs. The evidence then points to 

 the fact that the Lancefield beds are below the T. friiticosiis zone, 

 and probably at no great distance. 



The graptolitic slates of Darriwill (19 S.W.) are apparently 

 on the horizon of the L. Logmii zone for that species and 

 T. caduceus are, according to Professor McCoy, very plentiful at 

 that locality,* and the specimens quoted are on view in the 

 National Museum. Graptolites are recorded from many other 

 lower Silurian localities in Victoria, but till further observations 

 are made, and more of the species are identified, it will be rash 

 to assume any succession based solely on that of the northern 

 hemisphere. Probably the same general succession will hold, 

 but it is quite likely that certain species and genera will be 

 found to have a different range in the two regions, so that 

 inferences based on the few recorded species for these other 

 localities may quite possibly be erroneous. 



Prod. Pul. Vic, 



