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Amongst fossil species of oak, I believe it approaches most closely the 
Q. paheococcus, Ung. The leaves of that oak, which have been found only 
in the Fossil Flora of Radoboj, and that only once, being one of the rarest 
species of the Tertiary Flora, resemble in their form, texture, and most 
characters of venation the leaf of our species. They are distinguished from 
it, however, by the different angles of departure of their tertiary veins. Of 
the Quercus paUeococcus there is, besides the leaf, also an acorn, which, 
however, is more like the almost globose acorn of the Quercus lyratci, Walt. ; 
whilst the leaf, as regards the angle of departure and course of the tertiary 
veins, points more directly to the Q. alba, Linn. It appears in this case, as 
in so many others, that in the fossil species the properties of different 
existing species of the same group are united, thus indicating the genetic 
relationship of the latter with the former as the original species. 
I named the species after Abel J. Tasman, the discoverer of 
Tasmania. 
Locality and Horizon. — Ilisdon, Tasmania; in yellow Travertin of 
Upper Tertiary age. 
Collection. — British Museum (Natural History Branch). 
Tagus Wilkinsoni, sp. nor. 
Plate If, Fig. 1. 
Sp. Char . — F. foliis coriaceis, ovato-oblongis, basi acutis apicem versus 
angustatis, margiue undulato-dentatis, dentibus remotis obtusissimis, simpli- 
cibus vel denticulatis ; nervatione craspedodroma ; nervo primario paullo 
prominente, recto, apicem versus attenuato ; nervis sccundariis subangulis 
40-45° orientibus, tenuibus, simplicibus ; nervis tertiariis angulo recto exeun- 
tibus tenuissimis abbreviate ramosis, ramis inter se conjunctis, rete tenerri- 
mum formantibus. 
Ohs . — The size and dentation, as well as the venation, of this leaf, 
point to Fay us. The impression betrays a thick coriaceous texture, an 
ovato-oblong form, narrowed abruptly towards the base, and gradually 
towards the apex, the margin remotely dentate, with the teeth very obtuse, 
or almost undulate. The margin of the teeth is entire, or else that 
of the larger ones shows a shallow denticulation. The venation shows a 
o 
