LESQUEKEux.] PALEONTOLOGY LIGNITIC FLOEA SPECIES. 413 



oblong or ovate, lanceolate, taper-pointed, unequally serrate; lateral 

 veins thin, flexuous, or curved to the borders, craspedodrome, simple or 

 branching. The species is closely allied to JJ. Bronnii, Heer, which Mas- 

 salongo considers identical to his U. affinis. Ours differs by thinner, 

 more distant, lateral veins, by its shorter petiole, and the more acute 

 teeth of the borders. None of our living American species is compar- 

 able to it. 

 Habitat. — Middle Park, Dr. Hayden. 



Planera longifolla, Lesqx. 



This species has been briefly described in Eeport for 1872, (p. 371.) The 

 collection has received a large number of specimens from Middle Park, 

 representing it in its various forms. The leaves are generally ovate-lan- 

 ceolate or merely lanceolate, more or less acutely, and all equally simply 

 dentate; lateral veins simple, strong, going straight up to the point of the 

 teeth, under various degrees of divergence; petiole 5 millimeters long, 

 thickened to the base. The leaves vary in length and width, being gen- 

 erally smaller and narrower than those of P. Ungeri. Captain Berthoud, 

 however, has sent me sketches of leaves of a Flanera, one of which is2i 

 centimeters long and 2 centimeters broad, therefore broadly oval, with 

 sharp teeth, exactly likethe leaf published by Heer, (Arct.Flor. II, PI. xlv, 

 Fig. 5=^) as P. Ungeri. This leaf is so different m fades from all those which 

 I have seen and used for the descrijition of the American species that 1 can- 

 not consider it as representing the same. I have, therefore, to admit that 

 two species are represented in the Upper Tertiary measures of the Eocky 

 Mountains, at least till I have seen the specimens or recognized inter- 

 mediate forms. 



Sabitat. — Elko and South Park. The last specimens were sent by 

 Dr. Hayden. 



QuERCUS Eleoana, sp. nov. 



Leaves subcoriaceous, flat, ovate, taper-pointed or acuminate, 8 to 10 

 centimeters long, rounded and narrowed to the base, (broken,) doubly 

 serrate, with teeth alternately long, irregular, sharp-pointed, and one 

 or two small ones at their base ; nervation pinnate ; lateral veins simple, 

 X^arallel, craspedodrome, (straight or scarcely curving in passing up to 

 the borders; fibrillce thin; areolation same as that of Fagus feroniw, which 

 this leaf resembles, and to which it could be referable but for the large 

 size of the regular and regnlarly-pointed teeth. The substance of the 

 leaves is thicker than in this last species. 



Habitat— Blko, Prof. Cope. 



QuERCUS NERiiFOLiA, Heer. 



Only a fragment of an oblong-lanceolate, entire leaf, with distinct ner- 

 vation ; secondary veins at right angle to the middle nerve, branching 

 and effaced near the borders, with intermediate shorter tertiary 

 veins, more or less oblique to the secondary ones. The form of the leaf 

 is like that of Fl.Tert. Helv., (II, Pl.lxxiv,Fig.4,) and the nervation simi- 

 lar to that of Fig. 5. 



Habitat. — Near Florissant, west of Pike's Peak, Dr. A. C. Peale. This 

 locality may be referable to another group. 



Fagus feroni-<e, Ung. 



This species is represented by a dozen specimens, representing the 

 .eaves in their various forms, as figured and described by Ett. Bil. Flor., 



