DESCRIPTIONS OF SPECIES. 85 



tilicefoUa Heer, particularly the lobed form shown in Fl. Tert. Helv., 

 Vol. Ill, p. 183, PI. CLII, fig. 14, and the nervation is sometimes similar, 

 though generally less distinctly camptodrome. The differences, however, 

 between our leaves and the usually simple unsymmetrical obliquely based 

 leaves of T. tilicefoUa show specific and perhaps generic distinctness. The 

 localities which furnished the specimens now figured show by the great 

 abundance of leaf impressions brought from there that they were at one 

 time the home of rich and luxuriant vegetation, the slabs which carry 

 these leaves being crowded with those of many different genera and species 

 closely impacted together. Among these are the great oak leaves, 1 foot 

 to 15 inches in length and 6 inches in width (Q. Gronlandica), Taxodium 

 disticlmm miocenum, Juglans nigella, Prunus variabilis, large leaves of 

 Platanus and Pterospermites, Corylus MacQuarrii, etc. This Ficus (?) seems 

 to have been as abundant as any other, and collectors who shall visit the 

 locality hereafter, by taking proper pains, will be able to find abundant and 

 satisfactory representatives of all these and many other plants, and will 

 undoubtedly obtain conclusive evidence of their botanical relations. 



Formation and locality: Tertiary (Miocene). Cook Inlet and Admi- 

 ralty Inlet, Alaska, 



Ficus asarifolia minor Lesq. 



PI. LXYII, figs. 5, 6. . 



Hayden's Ann. Rept., 1874 [1876], p. 303; Tert, Fl. (1878), p. 20s. Not F. asarifolia 



Ett., Fl. Bilin., p. 156, PI. XXV, figs. 2, 3, 6. 



Note. — These specimens unquestionably represent the variety of the species 

 referred by Lesquereux to F. asarifolia Ett. in Hayden's Annual Report, 1874 

 [1876], p. 303; but this species has serrated margins, while in ours the margins are 

 entire or slightly undulate. This distinction was recognized by Dr. Newberry in a 

 memorandum on the plate, but he failed to state what name he intended to give to 

 the American leaves. — A. H. 



Formation and locality: Cretaceous (Montana group). Point of Rocks, 

 Wyoming. 



Ficus (?) Condoni Newb. 



PI. LVI, fig. 1; LVII, fig. 1; LVIII, fig. 1. 

 Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 512. 



"Leaves large, sometimes nearly 2 feet in length, three to five-lobed, 

 slightly decurrent, and the petiole sometimes stipulate; margins entire, or 



