104 PP. EEPORT OF PKOGRESS. FONTAINE & WHITE. 



The finding of this plant in our Upper Barrens, although 

 it is not specifically identical with the Permian species, is 

 very significant. 



Gerablattina balteata. Pl. XXXYIil, Fig. 5. 



This species of cock- roach is represented by the l.irger 

 part of an ux)per wing, with its neuration well preserved. 



The genus in which it is placed is characterized in a paper 

 on palaeozoic cock-roaches, now publishing in the ''Memoirs 

 of the Boston Society of Natural History." It is closely al- 

 lied to Blattina pro2)er, (or Etoblattina, as it must be called, j 

 and next to it, it is of all the fossil genera the richest in 

 species ; and while these belong mostly to the Old World, 

 two of them, including the present form, come from Amer- 

 ica. Gerabl. balteata is distinguished from its neighbors 

 not only by peculiarities in its neuration, and particularly 

 in the course of the internomedian vein and its forked 

 branches, but also by a characteristic which has suggested 

 the specific name, and which does not appear to exist in any 

 other fossil cock-roach, viz : the banded appearance of all 

 the veins and their branches, each being accompanied on 

 either side by a broad, regular border of black carbonaceous 

 matter, upon which are impressed frequent and slight trans- 

 verse lines. These lines are common to many fossil cock- 

 roaches, but here, instead of traversing the interspaces, as 

 usual, from vein to vein, they do not pass beyond the limits 

 of the black bands. The specimen was found in the roof 

 shales of the Waynesburg coal, at Cassville, W. Va. 



S. H. S. 



