FOSSIL PLANTS. 
467 
linear and parallel, each about one-eighth of an inch broad, with the same form, 
size and position, at both endsof the inflated body. Such a conformation seems 
far more the result of animal industry than of vegetable organization. 
The species'hitherto referred to this genus, are, with the first-named: P, 
Munsteri, of Sternb., Pcdeeoxyris regular Brgt., loc. cit., which, by its regular 
scale-like scars, is different from ours; Paiseoxyris multiceps and Paiseoxyris 
rhomlea, two species of F. Braun, merely enumerated in Unger’s Genera and 
Spec., without description. The two last species, like that of Sternberg, are 
from the Keuper Lias: that of Prof. Brongniart, from the Permian. Our spe¬ 
cies, represented in the lower part of the true Coal Measures, are therefore in¬ 
teresting to science, from their geological position. 
Mazon creek, Grundy county. 
SN 
*■ \ 
The following species have been found and communicated to me since the 
preparation of the plates : and havO not yet been figured : 
• N \ ■ ' \ 
Neuropteris microphilla, Brgt. 
Foss. Flor., p. 245, PI. 74, fig. 6 
Represented by two specimens from Mazon creek, which, though showing 
the characters marked by the author, do not distinctly indicate whether the spe¬ 
cies is truly a distinct one, or merely a small form with obscure nervation of 
Neuropteris Loschii, Brgt. 
Neuropteris angusti-folia, Brgt. ^ c. 
Foss. Flor., p. 231, PI. 64, fig. 3 and 4. 
The specimen is an exact representation of Brongniart’s figures of this spe¬ 
cies. The surface of the leaflet is smooth or without hairs; the veinlets some¬ 
what coarser, and not quite as distinct as in N. hirsuta, are marked at the up¬ 
per part of the leaf and at the base of the veinlets by the same kind of swell¬ 
ing or tumor which is seen in the author’s species, and has been considered by 
him as remains of fructification. The leaf at its base is elongated on one side 
in a kind of auricle, and abruptly narrowed or truncate at the other, linear 
lanceolate, obtusely pointed with a comparatively broad pedicel one-fourth of an 
