107 
The fossil described is referable to the leaf of Viper excelsum , Forst., 
inhabiting New Zealand. Its reference to Viper antiquum , Heer, from the 
Tertiary Flora of Sumatra, might also be noticed ; but this species differs from 
the Australian by its perfect actinodrome nervation. 
Locality and Horizon. — Newstead, near Elsinore ; in concretionary 
ironstone (earthy limonite), associated with basalt. 
CAS UAL I NHL. 
Casuarina Cookii, sp. non. 
Plate 9, Pigs. 3, 3a. 
Sp. Shar. — C. ramulis ultimis tenuissimis, strictis, simplicibus, tetra- 
gonis, internodiis, 4 mm longis, vaginarum dentibus 4, brevi-ovatis, acutis, 
appressis. 
Ohs. — A very thin Casurina branchlet is represented by Fig. 3 of the 
natural size, and Fig. 3a magnified. Its diameter is scarcely 1 millimeter 
long, and four-edged. The internodes arc short, the sheaths four-teetlied, 
adpressed, their teeth short, oval, acuminate. This branchlet bears a close 
resemblance to those of Casuarina sotzhiana ( Lphedrites , Unger, Foss, 
Flora von Sotzka, FI. XXVI, fig 5). The latter likewise shows very thin 
branchlcts, with four-teetlied sheaths. But the branchlets arc somewhat 
cylindrical, the internodes 8-10 millimeters long, and the teeth of the sheaths 
lanceolate, standing off. 
Very similar to the one above described is a second species, namely, 
Casuarina padangiana, Ileer, from the Tertiary Flora of Sumatra. In the 
latter the branchlets are four-edged, like those of Casuarina Cookii, while 
its articulations and teeth of the sheaths are like those of C. sotzhiana. 
Amongst living species, I consider Casuarina Decaisneana, F. Muoll., 
to be nearest related to C. Cookii. The former Casuarina belongs to the few 
species characterised by four-edged branchlets and four-toothed sheaths, 
differing, however, from our species by longer internodes. 
Locality and Horizon . — Between Hill and Watson’s shafts, in white 
pipeclay, from the Old Bose Valley Lead (stanniferous) on the Main Vege- 
table Creek Deep Lead, Emmaville (Vegetable Creek Township). 
