DESCRIPTION OF SPECIES— ILICEJ5. 271 



find moreover, in some fossil species of Jkx, I. stenojihyUa, Ung., /. Berberidi- 

 folia, Heer, a related type of nervation to that of these leaves, as figured in 

 Fl. Tert. Helv., iii, pi. cxxii, fig. 7, for the first species, and figs. 13 and 14 

 for the second. 



Habitat. — Green River, Wyoming; with the former (X>r. F. V.Hayden). 



Ilex subdeiiticulata, Lesqz 



Plate L, Figs. 5, 6, G a, 6. 



Ilex auMenticulata, Leeqx., Annual Report, 1873, p. 41(5. 



Leaves small, coriaceous, narrowly lanceolate or linear-lanceolate ; borders denticuLate from above 

 the narrowed base; lateral nerves distant, curving upward, and parallel to the borders. 



The name of this species refers to its close affinity to Heer's / denticulata 

 rather than to the divisions of the borders, which are more marked than in 

 the European form. The leaf of fig. 5 is larger, lanceolate, broader, and less 

 attenuated at the base than that of fig. 6. Its lateral veins pass nearer to the 

 borders in their curves, but they ascend quite as high, and join the upper 

 veins outside of the middle. The details of nervation of this leaf, whose 

 point is twisted into a short, obtuse acumen, are obsolete. It has the 

 same texture as that of fig. 6. In this one, the lateral nerves curve upward 

 in the middle of the areas, nearly parallel to the borders, forming, by anas- 

 tomoses with the veins above, a double festoon and joined to the teeth outside 

 by small branchlets. In /. denticulata, Heer (Fl. Tert. Helv., iii, p. 72, pi. 

 cxxii, fig. 20), the lateral veins reach closer to the borders, which are 

 denticulate in the upper part only. I consider the fruit in fig. 6 a (6 b, 

 enlarged), found upon the same specimen as fig. 6, as referable to this species. 

 It represents a small, crushed, berry-like drupe, with a small, ovate-pointed, 



hard nutlet, not flattened by compression. 



Habitat. — Near Florissant, Colorado {Dr. A. C. Peak). 



Ilex dissi III ills, sp. nov. 

 Plate L, Figs. 7-9. 



Quercaa Ilkoidesf (Heer), Lesqx., Annual Report, 1871, p. 291. 



Leaves coriaceous, variable in form and size, linear-lanceolate, cuneate or niirrowed to the petiole, 

 either regularly sharply dentate, or cut along the borders into distant horizontal short teeth, or long 

 spiniform divisions ; nervation subcamptodrome. 



These leaves are so widely difierent in tlieir characters, especially in their 

 form and size, that they seem indeed referable at least to two species. They are, 

 however, found, the only remains of dicotyledonous, upon the same fragments 

 of shale, and have exactly the same color and consistence. The leaf of 



