42 
GRAPTOLITES OF AUSTRALIA 
He recorded beds of the Darriwil Series “as previously 
constituted”, for the first time from the Castlemaine District. 
He extended the meaning of the term Darriwil to include 
not only the beds hitherto placed in it by T. S. Hall, but beds 
in the district between them and the Upper Castlemaine 
(Logano-caduceiis) zone all of which he had found in the 
Darriwil district. He retained the Castlemaine Series as 
fixed by T. S. Hall although to him the two zones of the 
Middle Castlemanian are not always distinguishable. He 
divided the Bendigo beds at Castlemaine into two, one 
characterized by the three branched Tetragraptus fruticosus 
and the other by the four-branched. He stated that T. fruti- 
cosus (three-branched) and BidymograiJtus hifidus are found 
associated at Tarilta and other places. He defined his new 
conception of the Darriwil, the nature of its facies, its strati- 
graphical position, particularly in regard to the evidence 
afforded by the development of Didifuiograptus caduceus in 
both the Darriwil and Castlemaine Series, transitional beds 
and subdivisions. 
He published a zone map and sections, also figures of 
Cardiograptus morsus gen. et sp. nov., Biplograptus gnomon- 
icus sp. nov. and Oncograptus hiangiilatus sp. nov. 
1918. — F. Chapman (82) described some by droid remains 
belonging to the Calyptoblastea from black slate or shale, two 
miles east-north-east of North Monegeeta, south of Romsey. 
He inferred from the presence of Acrotreta antipodium that 
the beds were probably of similar age to tbe Lancefieldian of 
the Mt. William and Lancefield districts. 
1919. — E. O. Teale (83) found in the Howqua River area 
graptolites on either side of the main diabase area there. On 
the western side, only Upper Ordovician (vide 156 post) and, 
possibly, Silurian graptolites occur. He searched assiduously 
where the Monograptus identified by T. S. Hall was stated to 
have been found, but did not find a single specimen of that 
genus, though hundreds of forms of less restricted range, 
chiefly Climacograptus and Diplograptus and probably Glos- 
sograptus were obtained. 
On the eastern side, in thin black slates, he obtained Tetra- 
graptus and Didymograptus, indicating a Lower Ovdovician 
horizon. Some distance upstream from the last locality, a 
few chains west of Eight-mile Creek, he found indistinct 
graptolites, suggesting Biplograptus and Climacograptus. 
The same author gave (84) a useful synoptic table of Upper 
Ordovician assemblages recorded from Victoria. He aMed 
to the list from Mt. Wellington (52) Biplograptus foliaceus. 
