Silurian.] PALZONTOLOGY OF VICTORIA. [ Graptolites, 
Not very uncommon in the olive mudstone (Wenlock shale) of 
B* 56 and B* 57, north-west of Keilor. 
EXPLANATION OF FiGuRE. 
Plate XX.—Fig. 10, left-hand figure, specimen natural size (the lithographer has altered 
the drawing so as to render it too gradually and regularly tapering). The right-hand figure 
portion magnified (but the cell boundary lines should diverge at a rather more acute angle and 
be straighter), 
Freperick McCoy. 
Norz.—Fig. 8 has been rendered inaccurate in the lithographing and must be refigured before 
the description can be given. 
By Authority: Grorcr Skinner, Acting Government Printer, Melbourne. 
Lode 
