336 
The locality whence they were obtained, however, is not 
knownto me, although I had made enquiries of the late Messrs. 
R. Gunn, and Roblin, and algo of Mr. T. Stephens, and others 
who might be expected to throw light uponthe matter. Iam 
inclined to the opinion that they were collected by the late Dr. 
Milligan from the Tertiary Leaf Beds at Macquarie Harbour. 
A fresh collection from this place might satisfactorily set this 
doubt at rest. 
The species of Tawites with fragmentary coniferous and 
other plant impressions, too imperfect for determination, was 
kindly forwarded to me by G. Thureau, F'.G.S., Inspector of 
Mines, who collected them in clayey beds underlying and 
intercalated between the basalt sheets at Mount Bischoff. 
Mr. Thureau states that these clays overlie and are intimately 
associated with the tin drift deposits at this place, and he 
thinks that the clay sediments were derived from the volcanic 
tuffs and other ejecta. 
The species of Hucalyptus I have named in honour of Dr. 
Milligan, who was the first local worker in Tastnania who con- 
tributed largely to our knowledge of Tasmanian geology. The 
species of Taxites I have named in honour of Mr. Thureau, 
who has afforded us, in his many official reports, much valu- 
able information regarding the mineralogy and stratigraphy 
of the important mining localities. 
The following is a description of the species referred to :-— 
Taxites. Brogniart. 
Leaves imear, narrow, or sub-falcate, obtuse, coriaceous, 
fleshy, with a median rib ending in a minute mucrone, flat, 
furnished with a half twisted pedicel which is briefly de- 
current. 
Taaites Thureaui, nov. sp. 
Branchlets narrow, leaflets numerous, linear, somewhat 
falcate, alternate, bilaterally and closely disposed, emerging 
from the axis of branchlet at an acute angle; extremites pointed 
and slightly incurved; decurrent pedicels nearly as broad as 
leaves, and forming an imbricated appearance along the axis 
of branchlets which is very fine; branchlets terminating in 
imbricated broad scaly heads, probably containing the fruit. 
Leaflet 2 millimetres long. Breadth across branchlet measur- 
ing from tip to tip of bilateral leaflets 10 millimetres. 
Locality—Tertiary leaf Beds, Mount Bischoff. 
Eucalyptus Milligani, nov. sp. : 
Leaves ovate-lanceolate or lanceolate, mucronate acute, with 
very numerous fine transverse parallel veins, the intramarginal 
one scarcely distant from the edge. The lateral parallel veins 
emerge and radiate gently outwards and upwards. ‘This 
