27 
the Q. laurophylla, Goepp., occurs in tiie Tertiary Mora of Java. Tin's only 
differs from the first in its more feehlo midrib, and stronger, curved, and 
non-anastomosing secondary veins. 
I name this species in honor of my highly esteemed friend, Sir Joseph 
D. Hooker. 
Locality and Horizon. — Dalton, near Gunning ; in hard, siliceous grit, 
reposing on Silurian rocks. 
QuERCUS PR.EPI1ILIPPINENSIS, Sp. 710V. 
Plate II, Fig. 7. 
Sp. Cliar. — Q.foliis coriaceisbrevissime petiolatis,ovatis,basi rotundatis, 
apicem versus angustatis, marginc integerrimis ; narvationc camptodroma ; 
nervo primario valido, recto, prominente, apicem versus attenuate ; nervis 
secundariis paucis subangulis 40-50° orientibus, distinctis, arcuatis marginem 
versus adscendentibus ; nervis tertiariis tenuissimis transversis, approximates. 
Ohs. — This leaf shows very characteristic peculiarities, and its deter- 
mination is quite easy. The strong impression left by the margin, and the 
principal veins in the stony matrix, is evidence of the strong coriaceous 
texture of the leaf. The petiole is very short, its length being scarcely 2 
millimetres. The blade is ovate, rounded at the base, narrowed towards the 
apex. The apex itself has not been preserved, but judging from the direction 
of the converging margins it must have been prolonged. The strongly 
marked margin is entire. The very characteristic venation shows a midrib 
very strong at the base, gradually tapering until it becomes lost at the apex, 
with only five acute-angled and camptodromic secondary veins on each side, 
very prominent at their origin, ascending, and very fine as they approach the 
margins, and with numerous very fine perfectly transverse tertiary veins. 
The intervening reticulation, probably very fine, has not been preserved, but 
is nevertheless indicated in one spot in the second secondary segment near 
the midrib. 
The fossil described belongs undoubtedly to the section Cyclohalanus, 
Endl., of the genus Quercus. We find in this section among the species with 
entire leaves some with transverse tertiary veins, and amongst these latter 
the Q. philippinensis. Do Gaud., with whose leaves our fossil agrees in all 
