155 
compare this leaf-fossil to the leaves of Loranthus myrtifolius, Cunningh., 
and L. celastroides , Sieb., both living in Australia. It is remarkable that the 
characters of the fossil species now described are exactly distributed in the 
named species of the present Mora. The first of them exhibits the short petiole 
and the very thin secondary nerves, the second shows the thick primary nerve 
disappearing below the apex, whilst the coriaceous texture and the obtusely 
ovate shape of the leaf arc common to both. (See Ettingshausen, Blattskelete 
dor Loranthaceen, Dcnkscli. K. Akad. Wissenscli. Wien, vol. xxxii, PI. Ill, 
figs. 21, 22 ; PI. IX, figs. 7-9). 
Locality. — Vegetable Creek. 
SAXIFRA GA CFAE. 
Callicoma prim^eva, sp. nov. 
Plate XIII, Fig. 22. 
Sp. Char. — C. foliis petiolatis subcoriaceis, oblongis, basi acutis, apice 
acuminatis, margine grosse serratis ; nervatione craspedodroma ; nervo 
primario distincto, prominente recto ; nervis secundariis crebris subarcuatis, 
simplicibus vel apice furcatis ; nervis tertiariis tenuissimis vix conspicuis. 
Ohs . — Corresponds perfectly to Callicoma pannonica, Ung. (Sylloge 
Plant. Foss, iii, PI. XIII, fig. 1), from the Tertiary Flora of Eperies, 
Austro-Hungary. The petiole reaches the length of one centimeter. The 
carbonaceous substance, partly adhering to the fossil, indicates a somewhat 
firm, almost coriaceous texture. The lamina of the leaf is oblong, rapidly 
narrowing towards the apex. The teeth on the borders are sharply prominent. 
The secondary nerves reaching the teeth are approximate, and often branched 
towards the margin. Their branchlets run towards the teeth-sinus like those 
of the living Australian Callicoma serratifolia, Andr. The tertiary nerves 
are very thin, and at acute angles to the secondary ones. But they are not 
approximate, and by this character our fossil leaf deviates from the similar 
leaves of some species of Quercus. Relating to the essential leaf characters, 
our species agrees very well indeed with the species of the Tertiary of Europe 
just named ; and according to this, perhaps, both may be considered identical. 
As, however, our fossil exhibits a slight difference in the form of its lamina 
being less lanceolate and less narrowed towards the apex than the C. 
