DESCRIPTION OF SPECIES. PP. 83 



Ooniopteris elliptica, Sp. nov., PI. XXX, Fig. 1. 



(Frond, bipinmite; pinnae closely placed ; racliis slender 

 and somewhat llexiious ; pinnnles alternate, narrow, ellip- 

 tical, and somewhat acute, united too neai* the middle ; mid- 

 nerve well marked, slender and extending to the apex ; 

 lateral nerves simple, about 6 on a side, the lowest pairs of 

 adjacent nerves usually meeting at an acute angle, and all 

 going off at an angle of somewhat less than 45"".) 



Habitat. — Roof -shales of the Waynesburg Coal, Cassville, 

 West Virginia. 



Goniopteris Species f PL XV II, Fig, 6. 



This fragment of a pinna was found in the Roof-shales of 

 the Waynesburg Coal at Cassville, W. Va. and resembles 

 the plant figured by Prof. Lesquereux on Plate XIII, Fig. 

 12 Illinois Report, and referred by him to Pecopterls {Go- 

 niopteris) arguta. Our plant is fruiting, as is that of Prof. 

 Lesquereux. This plant does not agree with the typical 

 form of G. arguta, which we find at the same locality, and 

 it is probable that it should be referred to a new species. 



Goniopteris obloiiga, Sp. nov., PI. XXX, Figs. 3-5. 



(Frond, bipinnate; primary rachis rough and stout; pin- 

 pse toward the base of the frond alternate, closely placed, 

 going off at angle above 45°, arching downward slightly, 

 with a rigid aspect, linear-hmceolate ; pinnules, alternate, 

 crowded, rounded at the apex, united to near the middle ; 

 in ascending, more and more united; terminal pinnules, 

 nnited to the summit; lowest pinnule on the lower side, 

 more or less deflexed ; pinnae toward the summit of the 

 frond, becoming shorter in ascending, with lol)es less and 

 less defined, until they pass into pinnules with undulate 

 margins ; mid-nerve strong and extending to the apex of 

 the lobe ; lateral nerves simple, going off at an acute angle, 

 the lowest pair anastomosing with the corresponding pair 

 of the adjacent lobes at the sinus.) 



Habitat. — Roof -shales of the Waynesburg Coal, West 

 Union, W. Va. 



