714 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxix. 



A wide costal area can be distinguished, which takes up about two- 

 thirds the length of the wing. The subcosta is like that in FJuc^niis 

 and sends otf 5 or <! oblique branches anteriorly. Above its 

 extremity the radius cui'ves toward the apical margin and is simple. 

 Its sector appears to arise about in the middle of the wing. In cons(^- 

 quenceof the overlapping of the front and hind wings, I can not deci- 

 pher the remaining venation. 



Ilolotype.—C^i. No. 38825, U.8.N.M. 



PSEUDETOBLATTINA, new genus. 



PSEUDETOBLATTINA RELIQUA (Scudder). 



FJohhtUiiui rell(/iia Scudder, Bull. U. S. Geol. Siirv., No. 101, 1898, p. 18, pi. ii, 

 fig. g; No. 124, 1895, p. 106, pi. ix, fig. 10. 



Lomliti/. — Pawtucket, Rhode Island. Pennsylvanian; Ten-mile 

 series; ? Allegheny or Conemaugh stage. 



It seems to me improbable that this fossil belongs to the true blat- 

 tids, since the shape of thesubcosta and of the radius indicate a nearer 

 relationship to Eiica'iins, Gera/poinpiiSi^ etc. In many respects, also, 

 the neuration recalls the oiyctoblattids. 



AGOGOBLATTINA, new genus. 



AGOGOBLATTINA OCCIDUA ( Scudder). 



Oryctoblnttin(t. occldud Scudder, Proc. Acad. Nat. 8ci. Phila., 1885, p. 87; Mem. 

 Boston Soc, IV, 1890, pi. xxxn, fig. 8. 



Local f f y. . -Ma,zon Creek, near Morris. Illinois. Pennsylvanian; 

 Kittanningl' (Allegheny) stage. 



This form does not probabl}- belong to the oryctoblattids, as Scud- 

 der believed, but in any case in the order Protoblattoidea. Unfortu- 

 nately Scudder's drawing is not clear enough to make it possible to 

 distinguish the veins of the overlapping wings; consequently I am not 

 in a position to determine the systematic position more accurately. 



I/oloti/pr.—Cnt. No. 88103, U.S.N.M. 



POLYERNUS Scudder. 



POLYERNUS COMPLANATUS Scudder. 



Pnli/rrmiK c(iiiii>iiniiil IIS i<{xn)DKn, Mem. I'.nstnn Sue. Ill, 1S85, ]>. 848, ])1. xxxi, 

 figs. 8, 11. 



LoeaJHy. — Mazon Creek, near Morris. Illinois. Pennsylvanian; 

 Kittanning!' (Allegheny) stage. 



OI)verse and reverse of an insect about ;-)() nun. long, with front and 

 hind wings folded over the abdomen, and in propoi'tion to the size of 

 the body, with a very small, semicircular pronotum, the tuberculate 

 middle portion of which Scudder toolc for an e3'e. 



