394 GEOLOGICAL SUEVEY OF THE TEEEITOEIES. 



angle of divergence to the borders, near the middle of the leaves, where, 

 without curve, they enter the margin and follow it. The two upper 

 pairs of lateral veins are nearly opposite, diverge from the medial nerve 

 in a less acute angle, and enter and follow the borders like the other 

 divisions, the fibrilles are thick, their divisions and the areolation dis- 

 tinct. A beautiful small species, very distinct, though the differences are 

 scarcely appreciable from description. 



FlCUS (?) COEYLIPOLIUS, Sp. nov. 



Leaves thick, coriaceous, oblong or ovate — lanceolate, entire, taper- 

 ing downward to a petiole, ]3enninerve ; medial nerve thick j secondary 

 veins alternate, mostly craspedodrome. 



These leaves, represented in many specimens, are deeply, coarsely 

 veined, the lowest secondary veins much divided, their branches anas- 

 tomosing in bows along the borders, the upper ones passing to the bor- 

 ders and entering them like their division or craspedodrome, therefore 

 with a complex narration like the leaves of some species of Quercus. 

 The leaves vary from ovate-pointed to broadly lanceolate. I do not 

 know of any relation to this species. 



Ficus Hatdenii, sp. nov. 



Leaves subcoriaceous, entire, ovate, tapering into a long twisted acu- 

 minate point, round truncate, or attenuated wedge* form, to a long peti- 

 ole ; pinnately nerved. 



These leaves, with the form of leaves of Popultis, are related to those 

 of Ficus appendiculato or Ficus populina, Heer. They are, however, pin- 

 nately nerved, with numerous open parallel secondary veins, curving in 

 passing to the borders, and uniting in bows to the upper ones at a short 

 distance from the borders. These secondary veins scarcely branch, but 

 they are joined at intervals by strong fibrillse ; their angle of divergence' 

 is about 40°. The nearest relation to this species, in fossil plants at 

 least, is Fioiis maravigna, Mass., Fl. Senig,, PI. xxxi, Fig. 7. 



Platanus Guillelm^, Gopp. 



Very rare in the shale of Black Butte j represented by one good speci- 

 men only. 



Benzoin antiquum (1) Heer. 



One leaf referable to this species is, by its form and nervation, like 

 Fig. 1, PI. xc, of Fl. Tert. Helv. It is, however, indistinct, and. its 

 specification somewhat uncertain like that of the leaf from Golden. 



DiosPiEOS BRACHYSEPALA, Heer, Fl. Tert. Helv. HI, p. 11, PI. cii, 



Figs. 10 to 14. 



Leaves entire, lanceolate, obtusely pointed, narrowed to a petiole, 

 pennately nerved, lateral veins oblique, brachiododrome. 



A number of specimens, all agreeing with the figures and description 

 of -this species. The petiole is 12 mill, long, the secondary veins, emerg- 

 ing at an acute angle of divergence, are somewhat distant, curve in 

 Ijows, and anastomose along the borders. 



