50 DESCRIPTION OF SPECIES. 



the venation is of the same type as that of some species of Ficus of both 

 the present and the older floras, comparable, for example, to that of Ficus 

 Geinitzii, Ett., "Fl., Niedersch.," p. 16, pi. ii, figs. 7, 9-11. 



The two leaves figured, pi. i, show the under face, where the veins 

 are more distinct and the medial nerve half-round. On the upper face 

 the midrib is deeply channeled, but not inflated at the point of union to 

 the short petiole which is rarely longer than li centimeters. 



Hal. — Commonly found throughout the Dakota Group formation from 

 Minnesota to Southern Kansas. 



PROTEACE^E. 



PROTEOIDES, Heer. 



Proteoides daphnogenoides, Heer. 

 "U. S. Geol. Rep.," vi, p. 85, pi. xv, figs. 1, 2. 



Proteoides grevillejcformis, Heer. 

 "U. S. Geol. Rep.," y\, p. 86, pi. xxviii, fig. 12. 



Proteoides laucifolius, Heer. 

 " Quedlinb. Fl.," p. 12, pi. iii, figs. 5, 6. 



Leaves narrowly lanceolate, narrowed in the upper part, very entire. 



Two specimens, Nos. 63 and 76, of the Museum of Comp. Zool. of 

 Cambridge, seem referable to this species. The first is a fragment of a 

 linear-lanceolate leaf narrowed upward to an inclined apparently obtuse 

 point, 8 to 9 centimeters long, 11 millimeters broad in the middle, the 

 base destroyed. The medial nerve is narrow, and the thin lateral veins, 

 two of which are seen near the base, come out at a very acute angle of 

 divergence and are soon effaced upward. 



The other leaf is larger, 16 millimeters broad in the middle, 8 centi- 

 meters long, lanceolate, gradually equally narrowed both ways, obtuse at 

 the apex. Its medial nerve is flat, somewhat broader, 1 millimeter near 

 the base, wherefrom two lateral nerves ascend at a very acute angle of 

 divergence (about 10°), and no other veins are distinct up to above the 

 middle of the leaf, where a few alternate ones come out at a broad angle 

 of divergence, curving up as in fig. 6 of Heer, loc. cit. Except that this 

 leaf is slightly broader the characters are identical. 



Hal. — Near Fort Harker, Kansas. Cits. Sternberg. 



