14 



probably of fructification , as exhibited by regular dot-like 

 impressions alternating with the nerves * . 



We are unable to derive testimony from our speci- 

 men, in support of the observations of both Goppert 

 and linger, — tending to establish the furcation of the 

 veins of the leaflets pertaining to this species. They 

 appear in the present instance, not trichotomous , but 

 perfectly simple. This evidence, — it must be con- 

 fessed, — is, perhaps, of little value, inasmuch as our 

 fossil impression seems somewhat obliterated. 



Distribution , in coal formation : — at Waldenburg, 

 Silesia; in Pennsylvania. 



PECOPTERIS HAIBURENSIS, LINDL. & HUTT. 



Lindl. and Hidt. Foss. Flo. vol. 3, ^;. 97, jjI. 187. 

 Unger , Gen. et SjJec. j). 179. 



Frond bipinnate ; petiole strongly defined , somewhat 

 rigid and attenuate ; pinuulae approximatively ovate, con- 

 tiguous and decurrent; veins furcated. The pinna is 

 imparl -pinnate, and the leaflet at the apex is obtuse or 

 rounded at its apex and lanceolate - ovate at its inferior 

 part. 



Distribution, in coal formation : — at Haiburn Wyke, 

 England; in Pennsylvania. 



1 "Durch die dreigabligen im rechten Winkel von dem Mit- 

 telnerven ausgehenden Seitennerven mit ihrer doppelten Reihe 

 von Fruchthaufchen durchgedriickt, was die Vergvosserung eines 

 Fiederhlattchens, Fig. 4, eben so schon als treu zeigt." — Gijpp. 

 Syst. Jil. foss. p. 233. 



