430 PALAEONTOLOGY OF ILLINOIS. 



Neuropteris heteropliylla, Brgt. Hist, cles Yeg. Foss., 1, p. 

 243, tab. 71 and 72, fig. 2. This species is abundant in the 

 Anthracite basin of Pennsylvania, in the shales of coal No. 3 

 and 4, but apparently rare westward. The State Cabinet has 

 a single small specimen on sandstone, from Drury's Landing, 

 Rock Island county, Illinois. Lower Coal Measures. 



Neuropteris Desori, Lsqx. • Oeol. Re-port Penn., p. 859, tab. 

 5, fig. 11 and 12, and tab. 20, fig. 5 to 8. Locality: Mazon 

 creek. A very small specimen, referable with doubt to this 

 species. Coal No. 3. 



Neuropteris jimbriata, Lsqx. Oeol. Report Penn., p. 855, pi. 

 4, fig. 17 and 18. The specimen of this species (No. 351 of 

 the State Cabinet) was found by myself at Murphysboro, Illi- 

 nois. It is more like a true Neuropteris than any other speci- 

 men of this fine species. The fringe of the leaflets is shorter 

 and comes nearer that of Neuropteris dentata, Lsqx., with 

 which it may be identical. Lower Coal Measures. 



Neuropteris Evenii, Sp. nov. PI. 36, fig. 4. Frond pinnately 

 divided into alternate, distant, ovate, cordate, obtuse leaflets, 

 attached to the main flexuous rachis by a short pedicel. Veins 

 thin, distant, forking twice, either flabellate from the base or 

 emerging from a short, thin, scarcely noticeable medial nerve. 

 By the general outline of the leaflets, this beautiful species has 

 some likeness with Neuropteris crenulata, Brgt., but the mar- 

 gins of our species are evidently entire, and the veins much 

 thinner, though the derm appears pretty thick. The round, 

 smooth, flexuous rachis looks as if this species had been a climb- 

 ing one. Found at Mazon creek by Mr. Joseph Even, who 

 has greatly enriched the fossil flora of Illinois by his researches, 

 and to whom the species is dedicated. 



Neuropteris pacliyderma, Sp. nov. PL 36, fig, 5. Frond 

 pinnately divided; divisions distant, opposite, sessile, ovate, 

 somewhat pointed, cordate at the base, thick, convex, with a 



