204 DESCRIPTION OF SPECIES. 



Autliolitltcs improbus, sp. nov. 



Plate XL, Figs. 20, 21. 



Whorls of foiu' coriaceous segments, opeu or reflexed, attached by a narrow base 

 enlarged upward, fan-like and undulatelobed on the borders. 



These fragments might represent reflexed scales of conifers but the 

 axis is too narrow. They are comparable to what Heer has named Equi- 

 sefum tunicatum, "Fl. Tert. Helv.," p. 44, pi. xiv, fig. 10, which represents 

 a broken sheath of Equisetum. 



//ai.— Randolph Co., Wyoming. U. S. Geol. Expl. Dr. F. V. Hayden. 



Carpites gemmaceus, sp. nov. 

 Plate XL, Fig. 19. 



Fruits or buds oval, obtuse, short-pediceled in three at the top of a small branch- 

 let. They are striate in the length, like unopened buds of flowers. 



Hab. — Florissant. Princeton Museum, No. 854. 



Carpites Milioides, sp. nov. 



Plate XL, Fig. 18. 



Seeds on slender pedicels, diffusely panicled, oval, thinly striate lengthwise, 3 

 millimeters long, 2 broad. 



Resembles a panicel of Milium effusum, Linn. The seeds are flattened. 



Hab. — Florissant. Princeton Museum. 



