340 GEOLOGICAL SURVEY OF THE TERRITORIES. 



in our leaf, but adds that the secondary veins are very slender (tenu- 

 issimi), while in ours they are thick and distinct. 



Habitat. — Near Fort Harker, Kansas, Glis. Sternberg. 

 Myrioze SEMINA, Cret, Flora, p. 63, PI. XXVII, figs. 4 & 4 a . 

 Seeds obovate, a little more than two millimeters in the upper part, pointed 

 at the other side, bordered by a narrow margin. 



CUPULIVIERJE. 



Dryophyllum (quercus) latifolium, spec. nov. PI. VI, fig. 1. 



Leaf large, oval, obtuse at the top and base, sinuate or obtusely dentate ; 

 lateral veins on an acute angle of divergence, straight to the borders, branch- 

 ing once or twice. 



This fine leaf is coriaceous, twelve centimeters long, nine centimeters 

 wide below the middle, its broadest part, obtuse at the point and base, 

 deeply undulate, or, rather, obtusely dentate at least in its upper part. 

 The nervation is thick, the secondary veins pass up at an angle of diver- 

 gence of 50° to the borders, and enter the teeth, while the upper division 

 or veinlets pass under the sinuses and follow the borders, a marked 

 character of the species of this section ; the nervilles are distinct though 

 thin, in right angle to the secondary veins, distant and disconnected ; the 

 ultimate areolation is obsolete. The leaf resembles somewhat by its 

 form Quercus Olafseni, Heer, of the Flora Arctica. 



Habitat. — Fort Harker, Kansas, Chs. Sternberg. 



Dryophyllum (quercus) primordiale, Lesqx., Cret. Flora, p. 64, 



PI. V, fig. 7. 



Leaf subcoriaceous, narrowly ovate-lanceolate, equally gradually tapering 

 from the middle upward to a point and downward to a short petiole, sharply 

 equally dentate; nervation pinnate, simple, craspedodrome. 



Dryophyllum (quercus) salicifolium, sp. nov., PI. VIII, fig. 2. 



Leaf linear lanceolate, rounded to the base; borders acutely denticulate, 

 with small teeth turned outward in the lower part, upward in the upper part, 

 lateral veins numerous, parallel, subcamptodrome. 



The fragment represents a slightly falcate leaf, rather membranaceous 

 than coriaceous, with a narrow middle nerve and close parallel second- 

 ary veins, most of them ascending to the teeth and passing under the 

 sinuses by an upper branch, or some of them curving along the border 

 and reaching the teeth by a small division. The areolation is not dis- 

 tinct; only in the upper part of the leaf the nervilles, in right angle to 

 the veins, appear ramified in the same way, ending in square or polygo- 

 nal areolae. 



This species is comparable, and, indeed, closely related to Dryophyllum 

 lincare, Sap., Sezane flora, p. 350, PI. IV, fig. 6. 



Habitat. — Near the San Juan Eiver, at a higher Cretaceous station 

 than the Dakota group, Southwest Colorado, W. H. Holmes. 



Quercus hexagona, Lesqx., Cret. Flor., p. 64, PI. V, fig. 8. 



Leaf rhomboidal ovate, tapering from above the middle to an acute point, 

 narrowed, wedge-form to the petiole, irregularly broadly dentate in the upper 

 part only, nervation pinnate, simple craspedodrome. 



Quercus % ellsworthiana. Lesqx., Cret. Flor., p. 65, PI. VI, fig. 7. 



Leaf subcoriaceous, oblong oval, point brolcen, narrowed in a curve to the 

 base; borders undulate; nervation pinnate, camptodrome. 

 The relation of this fragment is as yet uncertain. 



