704 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXIX. 



This species wjis longer and nioi'e slender than the foregoing, and 

 may have had a length of wing of about 65 nnn., of which 53 nnn. are 

 preserved. 



JIoh>t!/j>,.—V'At. No. 3ssii, r.s.N.:\L 



Fl(!. SI. — CiKKAIU'S ANC.rSTUa. 



GENOPTERYX Scudder. 



By this generic name Scudder designated a fossil which in an\' e^'ent 

 is most nearl}^ related to (remrux. 



GENOPTERYX CONSTRICTA Scudder. 



Gcnoi)liri/.r riiii.tliichi Sciddku, .Mem. IJostoii Sdc, Jll, 1885, i>. '.V27, pi. x.vix, 

 H^'. 11. 



LocaHfii. — Mazon Creek, near Morris, Illinois. Pennsyivanian; 

 Kittaning? (Allegheny) stage. 



Scudder referred this form not to the (lerarida", l)ut to the honio- 

 thetids. 



JIolotype.—OAt. No. 3X14:8, U.S.N.M. 



GERAROIDES, ne^A^ genus. 



By this name I distinguish a form which has been I'ecently pub- 

 lished by iVIelander and erroneously placed in the genus Dieconcura 

 Scudder. 



GERAROIDES MAXIMUS (Melander). 



JJiecovcura )naxi)H<i Mklaxdeh, Jour, (ieol., XI, 1903, p. l!»o, ])1. vi, lig. 5; j)!. 

 VII, figs. 14-17. 



Locality. — Mazon Creek, near Morris, Illinois. Pennsyivanian; 

 Kittanning? (Allegheny) stage. 



Melander referred this fossil to the Paheopterina, one of the'' neurop- 

 teroid" palajodictyopteran groups. 



Order PROTOBLATTOIDEA, new order. 



The forms which I include in this order appear to stand in the same 

 relation to the recent blatta^forms as do the protorthopteres to the 

 recent orthopteroids — that is, they seem to form a connecting link 



