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., Palseoxyris regulars, Brgt., loc. cit., which, by its regular 

 scale-like scars, is different from ours ; Palseoxyris multiceps and Palseoxyris 

 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. 



The following species have been found and communicated to me since the 

 preparation of the plates : and have not yet been figured : 



NETJROPTERIS 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. 



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 JV. 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 



