lie 
broader, the borders are finely teethed, the teeth directed upwards, and some- 
what approaching to one another ; the secondary nerves being less curved, 
depart under less acute angles. The tertiary nerves, diverging from the 
outer side of the former under acute angles, are very tine and anastomosing, 
enveloping a much developed network, which consists of minutely quadratic 
meshes (see Tig. 17a, enlarged). 
Our species approaches nearest in the above characters with Quercus 
Hyrei, Tenth., from Hongkong, the latter species only differing from it by 
less toothed borders. 
Locality and Horizon . — Old Hose Valley Lea l, with several of the 
preceding species. 
Lryopiiyllum Howitti, sp. nov. 
Plate X, Figs. 1, 1a and In. 
Sp. Char . — L). foliis coriaccis, oblongis, basi breviter petiolata sub- 
cordatis, margine calloso-dentatis, dentibus obtuissimis ; nervatione craspedo- 
droma ; nervo primario prominente recto, apieem versus attenuate ; nervis 
secundariis distinctis, sub angulis 40-45° orientibus numerosis approximatis, 
rectis, apice furcatis, ramis in dentes terminantibus, snperiore elongate 
nervum marginalem formante, inferiore brevissimo ; nervis tertiariis tenuis- 
simus, rectangularibus, approximatis, simplicibus vel furcatis, inter se con- 
jnnetis, recticulum tenerrimum formantibus. 
Ohs. — The leaf represented in Tig. 1 shows the type of nervation of a 
Lryopiiyllum , but without being closely related to any of the hitherto known 
species of the genus. The consistence of the leaf is coriaceous. The base of 
the oblong lamina is emarginate, or almost cordate, and shortly petiolate. 
The borders are toothed, the teeth obtuse, nearly rounded, and thickened. The 
secondary nerves are thin, but somewhat prominent, approaching and parallel 
to one another, straight, forked once just before each tooth-sinus of the margin. 
The branchlets of the folk, although being very unequal in length, reach the 
next two teeth as seen in Tig. In (magnified). The tertiary nerves proceeding 
from both sides of the secondary ones at right angles, are very fine and anasto- 
mosing. The quaternary nerves diverge from the latter at the same angle ; 
the meshes of the network, therefore, being mostly rectangular (see Tig. 1 b, 
enlarged). As analogous to this species one may consider Lryopiiyllum 
suhcrelaccum , Sap., and L. subfalcatum, Sap. 
Locality and Horizon. — Old Itosc Valley Lead, with the preceding. 
