71(3 GEOLOGY OF THE YELLOWSTONE NATIONAL PARK. 



tion preserved is 8 cm. long and nearly 8 cm. wide. There is, of course, 

 no means of knowing the configuration of base and apex, but from all 

 indications it is probable that the base was rounded-truncate and the apex 

 abruptly acuminate. It is well characterized by secondaries, of which the 

 lower prominent pair are strongest and arch up and join by a broad loop 

 to the secondaries above, producing a palmately ribbed leaf. 



I am uncertain as to the correctness of this generic reference, but it 

 seems to approach closer to Ficus than any other. In any case, it is so 

 well marked that it can be readily recognized. It does not appear closely 

 related to any fossil species with which I am familiar, but among living 

 species it has considerable resemblance to F. nodosa Tey. and Binn., and 

 F. procera R., both from British India. 



The species is named in honor of the discoverer. 



Habitat: Fossil Forest Ridge, middle stratum; collected by Arnold 

 Hague, September 21, 1884. 



Ficus tillefolia? Al. Br. 



A fragment of the basal portion of a large leaf, apparently of this 

 species. It is, for example, very much like the figure given by Lesquereux, 1 

 from the Auriferous gravels of California. 



Habitat: Hill above Yancey s and near the fossil trees; collected by 

 F. H. Knowlton, August, 1888. 



Ficus asimin^efolia Lx. 



Ficus asimincBfolia Lx. : Orefe. and Tert. PI., p. 2.50, PI. LVI, figs. 1-3. 



A single deformed leaf, which agrees in nervation with this species and 

 with the upper portion of another perfect leaf. 



Habitat: Fossil Forest Ridge, bed No. 3, "Magnolia bed;" collected 



by Ward and Knowlton, August, 1887. Yellowstone River, one-half mile 



below mouth of Elk Creek, base of bluff; collected by F. H. Knowlton, 



August, 1888. 



Artocarpus! quercoides n. sp. 



Pi. xcir, fig. l. 



Leaf large, thick, 5 (7?)-lobed, lower lobes large, rounded; upper 

 lateral lobes smaller, turning upward, of about the same size at apex as 



1 Mem. Mus. Comp. Zool., Vol., VI. No. 2, p. 18, PI. IV, fig. 8, 1878. 



