FOSSIL PLANTS. 429 



lobe a little extended, a little undulate on the margin; termi- 

 nal pinnule deltoid, nearly trilobate ; superior pinnae simple, 

 linear-lanceolate, pinnatifid or with slightly undulate margins ; 

 medial nerve distinct, strong near the base ; veins distinct, flat, 

 thick, bifurcate. 



Our species is evidently the same as that published by Mr. 

 Bunbury from the coal fields of Nova Scotia, though his figure 

 represents the nervation somewhat differently from what it is 

 on our specimens. The number of veinlets along each border 

 of the leaflets varies according to their size. They are equi- 

 distant, and not separated in fascicles, as shown by Mr. Bun- 

 bury's figure. In the fig. 1 of our plate 34, the veinlets are so 

 close, and the medial nerve so strong, that the species looks 

 more like a Pecopteris than a Neuropteris. The veins and vein- 

 lets of this Neuropteris, seen through a glass, appear broad, 

 flattened, or rather divided into two in their whole length, their 

 borders being inflated on both sides, and the middle depressed, 

 as seen in the enlarged part, pi. 33, fig. 4 a, and pi. 34, fig. 1 a. 

 This peculiar conformation of the veins shows the identity of 

 the large leaves (pi. 33, fig. 3, 4, 5) with this species.* It is 

 common enough in our Coal Measures. I have found it in 

 Pennsylvania, Kentucky and Illinois, generally in connection 

 with coal No. 3. The fine specimens figured pi. 33, fig. 1 and 

 4, come from Murphysboro, and were presented to me by Mr. 

 James Sampson, of New Harmony, Indiana. A number of 

 specimens in the State Cabinet at Springfield have been found 

 at the same place, and also at DuQuoin. Lower Coal Measures. 



Neuropteris Villiersii, Brgt. Hist, des Veg. Foss., pi. 1, p. 

 233, tab. 64, fig. 1. A very rare species, found only in small 

 specimens. Locality : Murphysboro, Jackson county. Same 

 position as last. 



* I have lately received from Newport, R. I., a specimen of this species, with a 

 round leaf (Cyclopteris) attached to the base of a branch, bearing small lanceolate, 

 oblong leaflets (Neuropteris), a conclusive proof of the identity of both forms. 



