376 GEOLOGICAL SURVEY OF THE TERRITORIES. 



into the epidermis 5 reddish at its surface when young; center some- 

 what mamilhite. 



It has no apparent relation to any fossil species as yet published. 

 In some specimens the center looks split, as in species of Rtj.sierium. 



Delesseeia fulva, »p. nov. 



Frond membranaceous, dichotoinous, (apparently long,) linear, with a 

 thick medial nerve; divisions linear, distant, obtuse, or enlarged at the 

 point. 



The preserved part of the frond is 20 cent, long-, its average width G 

 mill. The divisions are irregular in distance and position, varying 

 in length from 5 cent, near the base of the frond to mere obtuse lobes 

 at its upper end. Its color u})on the white sandstone is of a deep yel- 

 low. It is distantly related to Delesscria Sjyhwrococcoides, Ett., from the 

 Eocene of Promina. 



Sphengpteris Eocenica, Ett., Foss. Fl. of Promina, p. 9, PI. ii, 



Figs. 5-8. 



Frond large, at least tripinnately divided ; secondary pinna? long, 

 lanceolate, taper-pointed, oblique, from a half-round narrow rachis ; 

 pinnules numerous, very oblique, close to each other, contiguous, united, 

 from below the middk^, acutely lobed ; veins pinnate, tlie divisions 

 either simjile or forking once. This form somewhat differs from the 

 one published by Ettinghausen, by the connection of the i)innules from 

 below the middle, while they are separated from the base in the 

 European species ; also, by the shari)-pointed lobes of the pinnules, 

 these being described as obtuse by tlie author. The nervation, too, 

 shows a noticeable difference, the secondary veins in our specimens 

 being strong, flat, generally simple, and ascending to the point of a lobe, 

 or, when forking, one of the branches passing aside to one of the very 

 acute sinuses. These differences may be specific or merely simple 

 varieties resulting from the part of the frond represented by the speci- 

 mens. The general appearance is the same. Splendid specimens of 

 this species were obtained at Golden, especially by the kindness of Eev. 

 L. Burns, the superintendent of the mining college of that place. 



Pteris anceps, sp. nov. 



Frond linear, lanceolate, thick nerved, with apparently entire borders; 

 secondary veins at a right angle from tlie medial one, thin, though dis- 

 tinct, forking near the base, and one of the branches forking a second 

 time from the middle. 



A mere fragment, comparable to Lomarioiisis ciUnica, Ett., Fl. Bil., 

 p. 13, PI. iii, Fig. 13, somewhat ditierent by the nervation. 



Phragmites cenestgensis, Al. Br. 



Fine specimen of stems with articulation and scars, were found in the 

 white sandstone nnder the lignite beds. Professor Meek has also well- 

 preserved specimens of rootlets, with their capillary tilaments from the 

 same sandstone. 



