DESCKIPTION OP SPECIES. 35 



that is seen in the leaflets of the genus Phyllocladus, in which the leaves 

 are (hrectly attached by a short petiole to round branches and are all 

 gradually attenuated or cuneiform at the base, not decun-ing, and of which 

 the lateral nerves, at a more acute angle of divergence, are mostly equal, 

 simple, or forking once, irregularly inflated, directl)' passing from the median 

 nerve to the borders. C(impariug the leaves figured on PL II with those of 

 the living species of Phyllocladus, especially of P. rhomhoidalis Rich., of 

 Tasmania, the accordance of the characters is evident, the only difference 

 between the fossil and the living leaves being in the crenate borders of 

 those of tlie last species. 



It may be that the leaves described and figured by Heer (loc. cit.) do 

 not represent the same species as those of the Dakota Clroup. All those of 

 Heer are entire ; one deeply lobed or lacerate at apex ; two of them lanceo- 

 late, acute or acuminate ; all of smaller size and the median nerve scarcely 

 marked, even toward the base, while the lateral ones are distinct, not inflated ; 

 charactei-s at variance with those of the leaves figured as above. Part of a 

 branch is represented by Heer,^ which in the mode of attachment of the 

 leaves has some likeness to Thlmifeldia Nordenskioldi. But all the leaves 

 are narrowed at base to a short petiole and not decurrent, similar in this 

 last character to those of Phyllocladus, and differing by the same from the 

 genus Thinnfeldia. 



Habitat : Found in many specimens in red shale ten miles northeast 

 of Delphos, Kansas. No. 4064 of the collection of R. D. Lacoe, of Pitts- 

 ton, Pennsylvania. 



Tribe TAXODIEyE. 



Sequoia Eeichenbachi Gein. 

 PI. II, Pig. 4. 



Heer, PI, Foss, Arct., vol. 1, p. 83, PI. xliii, Pigs. Id, 2b, 5a; vol. 3, pt. 2, p. 77, PI. xii, 

 Pigs. 7c-d ; PL XX, Pigs. 1-8 ; p. 101, PL xxviii. Pig. 2 ; PI. XXXIV, Pig. 1 ; 

 Lesquereux, Cret. PI., p. 51, PI. i, Figs. 10-lOb, cone. 



Araucarites Eeichenbachi Gein. 

 Gharakt. sach8.-bdhm. Kreidegeb., p. 98, PL xxiv, Pig. 4. 



Branches thick, covered entirely by the leaves ; branchlets alternate, 

 long ; leaves decurrent, open, falcate-incurved, linear-subulate, acuminate 

 at apex, simple-nerved, solid ; strobiles uaiTowly oval, about 1 inch in 

 diameter ; scales peltate, rhomboidal. 



' Loc. cit., PI. XLVi, Fig. U. 



