80 PP. REPORT OF PROGRESS. FONTAINE & WHITE. 



Pecopteris incllnata. Sp. nov., PI. XXIX, Fig. 4. 



(Frond, bi-trippinnate; pinnae small and delicate; pin- 

 nules bluntly lanceolate, separate, alternate, and inserted 

 on the racliis at a very acute angle ; mid-nerve well defined, 

 and extending to the apex ; lateral nerves few, simple, and 

 going off at an angle of 45°.) 



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

 West Virginia. 



Pecopteris, Species f PI. XXVII, Fig. 5. 



Fig. 5. PL XXVII, represents a form of Pecopteris that 

 we find in fragmentary specimens at Cassville, in the roof 

 shales of the Waynesburg Coal, associated with Goniop- 

 teris emarginata, Scliimp., which in the texture and taper- 

 ing nature of pinnae somewhat resembles what we might 

 suppose the lower pinnae of this Goniopteris to be; but the 

 forking lateral nerves of the pinnules, their slight union, 

 and falcate form show that it is a different plant. It is 

 very probably a new species, but as we have not seen any 

 larger specimens than the one figured, we cannot fix Avitli 

 sufficient certainty its specific character, and hence forbear 

 to give it a name. 



Pecopteris Species f PL XXVII, Fig. 4. 



In Fig. 4, PL XXVII, we give a small fragment of a 

 plant which very much resembles P. siib-falcata, F. & W., 

 but the insertion of the pinnules is quite different from 

 that in the latter plant, and the mid-nerve, which in P. sub- 

 falcata is rather slender, is here very thick, especially to- 

 wards its base. It may represent a new species, but as yet 

 we have not suflacient material to fix its specific character. 



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

 West Virginia. 



Pecopteris goniopteroides. Sp. nov., PL XXV, Fig. 2. 



(Frond, tri-pinnate; principal rachis very stout; second- 

 ary pinnae alternate, narrow, almost linear, going off at 

 nearly a right angle ; secondary rachis quite slender ; pin- 

 nules united to near the middle, ovoid, inclined forward ;, 



