GRAPTOLITES OF AUSTRALIA 
59 
The distribution of the graptolite series and their relation 
to the axial lines were discussed. A section showing the 
graptolite zones was given. The relation of the auriferous 
zones to structure was considered and the authors came to 
the following conclusions regarding auriferous quartz reefs 
in the various zones : 
1. The Darriwil beds have so far been uniformly barren. 
2. The upper beds of the Castlemanian have contained 
productive fault reefs. Occasional saddle-reefs are 
known, but productive spurry reefs are more charac- 
teristic. 
3. The Bendigo horizon contains numerous productive 
saddle reefs in addition to productive spurry reefs. 
4. Auriferous saddle reefs occur in beds of the Lancefield 
horizon, but “indicator” gold is more characteristic. 
The princijDal graptolite localities were listed. 
W. J. Harris (130) stated that to the east of the central 
or gold-fields area of Bendigo Ordovician strata higher in 
the series than those of the central area have long been 
known. He discussed a number of traverses across the 
boundary between these higher and lower beds and shows that 
if the localities are plotted “it is seen that the dividing line 
between the high Darriwilian beds to the east and the Lance- 
fieldian beds to the west (probably Bendigonian in the south- 
west) is an almost straight line bearing about N. 15° W. and 
traceable about 14 miles or more. . . . The only practicable 
explanation of this seems to be faulting” for which he sug- 
gests the name Whitelaw Fault. He estimated that “the 
thickness of missing beds would be about 12,000 feet 
measured vertically or perhaps 5,000 feet measured at right 
angles to the dip.” 
R. A. Keblc and W. J. Harris (131) figured and described 
Dklifmograptus acriculus sp. nov., D. meMdicus sp. nov., 
Tetragraptus chapmani sj). nov., T. decipiens var. hipatens 
nov., Pterograptus lyricus sp. nov., Climacograptus uncinatus 
sp. nov., C. subminimus sp. nov., Diplograptus {Glyptograp- 
tiis) euglyphus Lapw., D. (G.) euglypJius var. sepositus nov., 
J). ( Amplexograptus) perexcavatus Lapw., Trigonograptus 
sp., Glossograptus pilosus sp. nov., Cryptogmptus circinus 
sp. nov., Petiograptus pulcJicrrimus sp. nov., Monograptus 
aplini T. S. Hall emend. Keble & H., M. spiralis (Geinitz) 
var. permensis nov., 31. cf. scanius Tullb., 31. pandus, and 
Stomatograptus au.stralis (McCoy). 
K. Sherrard (132) exhibited at the Royal Society, Sydney, 
New South Wales, 3[onograptus colonus var. cornpactus and 
