388 



numerous, more open, lateral veins, whose branches are more curved in 

 passing up to the borders, and especially by the enlarged truncate or 

 subtruncate base of the leaves. The direction of the veins along the 

 lower branches of the lateral veins is the same, and the borders are den- 

 tate in the same manner, though not black-margined as in Y. margin- 

 atum. 



Habitat. — Black Butte, mixed with Saurian bones, and as abund- 

 ant in that bed as is its congener, in the shale above the main coal- 

 of the same locality. 



28. CiSSUS PAROTTIiEFOLIA, sp. 7lOl\ 



Leaves ovate-subcordate or narrowed to the base, gradually and ob- 

 tusely pointed, undulato-crenate, three-nerved from the top of the peti- 

 ole or from a little above the Jjorder-base; lower secondary veins at a 

 distance from the primary ones, which are much divided; all the branches, 

 like the secondary veins, craspedodrome; nervilles strong, in right angle 

 to the veins; areolation small, square, by subdivision of veinlets. 



The species is represented by a few leaves, one of them fragmentary, 

 has a cordate, unequal base, and may represent a different species. 



Habitat. — Green Eiver, west of the station. Dr. F. Y. Ilayden. 



29. Ehajmnus Eossmassleri?, Heer. 



Leaves oblong-obovate, obtusely pointed, entire, narrowed to the base, 

 penninerve ; secondary veins close, parallel, passing to the borders nearly 

 straight and curving along them in festoons. These leaves are small; 

 one only is preserved entire ; their specific relation is not fixed. 



Habitat. — Black Butte. 



30. Phaseolites juglandinus ?, Heer. 



Leaflets of an apparently compound leaf, oval-oblong, obtusely pointed, 

 rounded to a short petiole, entire, subcoriaceous, penninerve ; lateral 

 veins parallel, distinctly camptodrome, and following the borders in fes- 

 toons-; ultimate areolation small, irregularly quadrate. 



The species may be different from the European one bearing this 

 name, but it appears to differ only by more open secondary veins. 



Habitat. — Green Eiver group, near mouth of White Eiver, Prof. 

 Wm. Benton. 



31. Leguminosites alternans, sp. nov. 



Leaflet lanceolate, narrowed to the sessile base (point broken), appa- 

 rently tapering and; acute; borders entire; secondary veins close, nu- 

 merous, fifteen pairs in a space of two and a half centimeters, with in- 

 termediate shorter tertiary veins anastomosing by crossing veinlets: 

 areolation obsolete. This leaf is comparable to a Dalbergia or a Podo- 

 gonium by its nervation ; its form, especially the narrowed base, is com- 

 parable to Cassia. 



Habitat. — Near mouth of White Eiver, W. Denton. 



32. Sapindus Dentoni, sp. nov. 



Leaves lanceolate, gradually narrowed to a long acumen, unequilat- 

 eral and rounded at base to a short petiole, entire or slightly undulate, 

 thick; secondary veins close, parallel, diverging forty to fifty degrees, 

 thick, straight to the borders, where they abruptly curve, and which they 

 closely follow. 



Species allied to Sapindus falcifolius, Heer, but remarkably distinct 

 from this and other congeners by the thick, close, lateral veins straight 

 to the borders, where they curve so abruptly that they appear at first 



