DESCEIPTION OF SPECIES, PP. 91 



Taenioptefls Lescuriana, Sp. nov., PI. XXXIV, Fig. 9. 



(Frond, simple, broad, elongate ; mid-rib, rather strong 

 and rough ; lateral nerves, rather remote, somewhat numer- 

 ous, going off from the mid-rib at an acute angle, forking 

 once near the insertion, each branch usually forking again 

 a short distance from the mid rib, arching strongly outward 

 so as to pass to the margin at right angles to it; sometimes 

 the branches fork near the margin, but rarely.) 



As will be seen from the figure, the specimen given is 

 only a fragment in which the margin of the part seen is not 

 preserved. The part of the lamina preserved is 4 c. m.'s 

 wide, and the entire plant must have been 10 cms. wide, 

 as not one half is shown in the figure. 



The nearest relative of our plant seems to be Taeiiiopterls 

 multinerms of Weiss, Flor. d. jiinst Steink, u. d. Roth. 

 Tab. 81, Fig. 13. 



Our plant however is larger, has a more slender mid-rib 

 and few lateral nerves, with a different mode of forking, 

 though the departure from the mid-ribs is similar. 



Our 2:)lant resembles in size and form the Macrotaeniop- 

 terids of the Rhaetic and Oolite, and may be the ancestor 

 of those found in the Ri(3hmond coal field. 



It has a remarkably strong resemblance to Macrotaeniop- 

 teris (Schenk) gigantea of the Rhaetic, as figured by Sclienk 

 in his " Foss. Flor. d. Grensch," PI. XXVIII, Fig. 12, both 

 in the nervation as shown in the lower part of Schenk' s fig- 

 ure in the size of the mid-rib and in the probable dimen- 

 sions; for in our plant the width could not have been much 

 less than that of M. gigantea. 



Our plant is named in honor of Prof. Leo Lesquereux, 

 who has done so much to advance the science of palseo- 

 botany. 



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

 ville. West Virginia. 



TaenioiDteris Newherrlana. Sp. nov., PL XXXIV, Figs. 

 1-8. 



(Frond, simple, elongate, narrowly elliptical, tapering 

 slowly to the apex and base; mid-rib, of medium size, tap- 

 ering gradually from the base to the apex of the frond ; 



