— 641 — 
5, Concave surface with large polygonal mesh filled with carbonaceous 
residue, probably from sporangia or pollen cases. 
5a. Part of the same pivtographicily eularved to four diameters to show 
the impressiuns of the pulygonal masses, separated by irregular narrow, non-vas- 
cular ridges, 
6. Convex surface, from another leaf, slowing the nervation in a rather 
narrowly elongated Glossopleris type of mesh. 
Fig. 7. Oltokaria ovalis n. sp. 
Surface of fossil showing the fasciculite nervation, flexuose, and probably 
anastomosing while forking, the ultimate divisions entering the rounded 
teeth. 
7a. Oval-ovate, radially arranyed bodies, probably micro-sporangia, seen in 
the coaly residuc of the counterpart of the example shown in Figure 7. These 
bodies, shown enlarged to four.diameters, appear in distribution to correspond to 
the mesh seen in the obverse of the specimen. 
PLATE VIII 
Figs. 1-7. Gangamopteris obovata (Carr.) D, W. 
Specimens showing the forms of the apices of the leaves, and the narrowed 
form of base seen in some of the fossils. Scattered about on the same rocks are 
numerous seeds, Curdiocarpon (Samaropsis) Seixasi, mostly without the wing, 
though the latter is shown in the upper right in Figure 2, the upper left in Fi- 
gure 7. 
Figs. 8-10. Arberia ninasican. g.,N. Sp. 
These pedicellate, recurvately divided types probvbly represente dissected 
inflorescence-scale leaves, the abruptly truncated sometimes slightly lacerated, 
striated lobes being the pedicils from which seeds are believed to have fallen. 
They are in all cases most intimately associated with small seeds indistin- 
guishable from the young forms of Cardiocarpon Seiwasi. 
Figs. 11-13. Voltzia (?) sp. 
ll. Twig with short lcaves below, and longer leaves at the apex. 
13. Fragment with long slender leaves. 
13a. Leaf, showing form, from the same specimen. 
13 b. Leaf in profile. 
PLATE IX 
Figs, 1-3. Derbyella aurilan. ¢., 0. Sp. 
1. Nearly complete scale-leaf. 
la. The same, enlarged to four diameters, showing the marvinal lobes and the 
sporangium (?) on the base of each lobe. 
2. Counterpart of the example shown in Fig. 1. 
2a, The same, enlaryed to four diameters. The twisted and upturned position 
of the marvival lobes is indicated on the left in this figure, aud on the lower right 
in Fig, la. 
