No.Uii. AMERICiS PALEOZOIC INSECTS— HANDLIRSCII. 781 



PHYLOBLATTA, new genus. 



Under this iianie I inciutlc a series of t'orins with more or less re^Hi- 

 hirly elliptical front winos, whose lenoth is at least ^1\ times, hut 

 mainly 2^ times as great as tlie l)readth. The costal area is always band 

 shaped, never especially wide, and also never particularly expanded 

 at the base; it extends at least one-half, butchietly three-tifths or two- 

 thirds the length of the wing and contains a variously large number 

 of veins. The radius always remains in the anterior half of the wing 

 and occupies, with its forward-directed branches, the free portion of 

 the front margin. The iirst of these veins is either simple or furcate 

 or is divided into 3 to 5 twigs. The media stretches in a gentle curve 

 to the lower end of the apical border or to the extremity of the poste- 

 rior border and sends off forward a variously large number of more 

 or less compound branches, mainly rather straight to the apical margin, 

 which the}" almost entirel}" occupy. The cubitus, with its chieffy com- 

 pound veinlets, takes up nearl}' the entire free inner border, and with 

 its distal branches fre({uently reaches even to the lower end of the 

 apical margin. The anal area extends one-third to two-fifths the 

 length of the wing and contains a moderately large number of veins. 

 The intercalary venation is either more rugosely leathery or more 

 cross wrinkled. {'.) Regular cross lines do not seem to ])e developed. 



This genus, which is very abundant in forms, is spread over America 

 and Europe, and seems to represent the origin of many more highly 

 specialized types. The species are found in the upper parts of the 

 Carboniferous formation and in the lower portion of the Permian for- 

 mation. I am convinced that after further and more careful investiga- 

 tion of more al)undant mat(n"ial many of the succeeding species will be 

 combined. 



Type of genus, /*/n/h>hh(ft<i scJiroctrrl ((riebel). 



PHYLOB1.ATTA COMMUNIS (Scudder). 



EtohkiUiiMruniiimidii Scui)J)EK (part), lUill. U. S. (leol. tSurv., No. 124, iSltn, p. 93, 

 pi. VII, fig. 10 (not figs, n to 17). 



Locality. — Cassville, West Virginia. Dimkard formation; Lower 

 Permian. 



In my opinion, Scudder has uniti^l several species under the name 

 Kfohlaffliui co'j/t//ufni.s^ from which 1 select the one represented in 

 tig. 10 as the type. 



Cotype.— Cat. No. 38188, U.S.N.M. 



PHYLOBLATTA MACROPTERA Handlirsch. 



Etohlattina cuiitiiiimis Scuddek (part). Bull. U. S. (Jeul. Surv., No. 124, 1895, p. 98, 

 pi. vn, fig. 17 (not figs. 10 to 16). 



Locality. — C^assville, West Virginia. Dunkard formation; Lower 

 Permian. 



Holotype.^C'At. No. 38891, U.S.N.M. 



