396 GEOLOGICAL SUKVEY OF THE TEEEITOEIES. 



Flabellaeia LONGIEACHIS, Ung. 



Leaves very large, as seen from numerous fragments ; rays attached 

 in an acute angle of divergence to the very narrow rachis, obtusely 

 carinate, marked in the length by obtuse equal striae less than one mil- 

 limeter apart 5 epidermis comparatively thick. As Uuger remarks it, 

 the rays are not duplicate or folded in their contact to the rachis. The 

 species is represented by many specimens ; it appears identical with 

 that described by Unger. 



Habitat. — Divide between Yellowstone Lake and Snake Eiver, Hay- 

 den; Raton Mountains, Golden. 



rLABELLAEIA(?) FRUCTIEEEA, sp. nov. 



Two fragments representing the base of an apparently large palm-leaf, 

 with very numerous rays, 60 to 80, acutely carinatp, nerved ; primary 

 nerves a little more than 1 millimeter distant; secondary veins very thin, 

 slightly discernible ; top of the rachis or petiole flat or enlarged on the 

 sides, reniform. Joined to it is a small raceme of cylindrical oblong 

 obtuse fruits, tapering to a slender peduncle, narrowly striated in the 

 length, slightly flattened by compression, 1 centemiter long, ^ centime- 

 ter wide in the middle. Four of these fruits are attached to a common 

 pedicel, partly imbedded into the stone, alternately diverging from it 

 by short peduncles. 



Habitat. — Golden. 



EeiocaulonC?) porosum, sp. nov. 



Leaves basilar, rosulate, spreading, entire, linear-lancolate, broader 

 at the middle, gradually tapering ui)ward to a slightly obtuse point, 

 and downward to a very short petioled base; medial nerve broad, con- 

 cave ; lateral veins two, nearly parallel, with apparent ramifications to- 

 ward the borders, forming round polygonal small areolae. Theleavesare 

 thick, of a spongious texture apparently ; the meshes along the borders 

 are not distinct, and may be formed by contraction of the epidermis. 

 I do not find any species to which this form may be comparable, except 

 the leaves of some large rossulate Eriocaulon. The specimen is cut 

 through by rootlets nearly as thick as the leaves are broad. 



Habitat. — Sand Creek, W. H. Holmes. 



ZlNGIBERITES(l) UNDULATUS, Sp. noV. 



Fragments of large leaves, whose outlines are not preserved, equally 

 undulate on the surface, marked with oblique, distinct, parallel primary 

 veins, 2 millimeters distant, with 6 to 7 very thin intermediate veiuiets. 

 The surface is covered with a thick epidermis or the leaf is subcoria- 

 ceous. The surface-undulations are formed by deep furrows, which, how- 

 ever, are more or less distinct, and which do not cut the connection of the 

 veins. There is no trace of rachis to which the fragments of an evi- 

 dently large leaf may have been attached. 



Habitat. — Golden. 



Ehizocaulon geacile, sp. nov. 



Branches slender, straight, irregularly forking, bearing oblanceolate, 

 scythe-shaped, very obtuse, small leaves, with the base descending or 

 decurring along the stem, joined to it by a very short, thickish petiole, 

 appearing like a swelling of the narrowed base of the leaves. The 

 leaves are about 7 millimeters long, 2J millimeters broad toward the 

 point where they are broadly rounded ; they curve downward from the 



