DESCRIPTION OF SPECIES. 83 



can not be identified with that of tlie Miocene of Euhcca. Tlie nervation 

 is so pecuhar that the similarity is the more remarkalile. Tlie leaf does 

 not appear very thick or coriaceous, but is solid and the surface has no trace 

 of nervilles. 



Habitat: Near Fort Ilarker, Kansas. No. 2809 of the U. S. National 

 Museum collection. 



FiCUS MELANOPHYLLA, Sp. UOV. 



PI. L, Fig. 2. 



Leaves coriaceous, oblong, abiiiptly rounded at base in passing 

 obliquely towards the petiole and curving down in reaching it, obtuse at 

 apex (broken), entire; secondaries numerous, parallel, oblique, generally 

 separated by parallel tertiaries cm*ving and joined in bows at a distance 

 from the borders, a camptodrome and dictyodrome nervation. 



This finely preserved leaf is about f/'" long, S-o"^" broad above its base, 

 and has a slender petiole 1.5"" long, which is enlarged at its point of attach- 

 ment. I do not find any leaf to which its form is comparable; but its well 

 defined nervation and areolation are those of many species of Ficus living 

 in our time. F. nitida Thunb., F. americana Dubl., F. lentiginosa Vahl of 

 Cuba, etc., are examples. 



Habitat: Kansas. 



Ficus Mudgei, sp. nov. 

 PI. XII, Fig, 4. 



Leaves small, coriaceous, elliptical, obtuse at apex and at the base in 

 joining the strong petiole, entire; nervation penninerved-camptodrome. 



A small leaf, 5*"° long, S.S"" broad at the middle, the borders curving 

 at base to a strong, woody petiole 2*"" long. The primary nerve is thin, 

 enlarging only near the base. The secondaries consist of six pairs, which 

 are alternate, at an angle of divergence of 45°, all equidistant, parallel, tliin, 

 ciu'ved near the borders, anastomosing in simple bows. The ner\411es are 

 thin, at right angles to the secondaries, traversed by very thin tertiaries or 

 anastomosing at right angles. 



The leaf has the appearance of a Rhamnus, and is comparable in form 

 and size to B. Aizoou L^g. (Flora von Sotzka , p. 49, PI. xxxi. Fig. 7). It 

 difi"ers, however, in the mode of attachment by a basilar curve to a strong 

 petiole and also in the position of the lower secondaines, which are opposite 

 and quite near the base of the midrib. The essential characters of the fossil 

 species are I'ecognized in Ficus sijcomorus L., and in the impression of a leaf 



