792 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



POROBLATTINA LATA, new species. 



Locality. — Wills Creek, near Steubenville, Ohio. Conemaiigh for 

 mation; shales above the Ames limestone. 



Fl(i. lUO.— POROBLATTINA LATA. 



Front wing, !> mm. long; 1| times a.s long- as l)road. Radius with 

 2 simple, one 3-parted, and 2 furcate branches. 

 EolotyjM.— Cat No. 38696, U.S.N.M. 



POROBLATTINA ARCUATA Scudder. 



Pnrohlattina (irciiatd Scudder, Proc. Acad. Nat. Sci. I'hila., 1885, p. o9; Mem. 

 Boston Soc, IV, 1890, p. 486, pi. xli, tij^ 5. 



Loctfliti/. — Fairplay. Colorado. Lower Permiiui. 



POROBLATTINA RICHMONDIANA, new species. 



Locality. — Wills Creek, near Richmond, Ohio. Conemaugh forma- 

 tion; shales above the Ames limestone. 



Front wing, 9 mm. long; more than twice as long as wide. Radius 



Fk;. 101.— POROBLATTINA RICHMONDIANA. ' 



with 7 branches, the lirst, third, fourth, and tifth of which are simple, 

 the second and .seventh furcate, while the sixth is thrice divided. 

 Rolotype.—Cat. No. 38644, U.S.N.M. 



POROBLATTINA LAKESII Scudder. 



I'orohlatt'ma lak-ei<ll Sccdder, Proo. Acad. Nat. .Sci. Phila., 1885, p. 39; Zittel's 

 Ilandbucli, 1885, p. 755, fig. 936; Mem. Boston Soc, IV, 1890, p. 4m, \>\. xi.i, 

 fig. n. 



Locality. — Fairplay. Colorado. Lower Permian. 



? SYSTOLOBLATTA, new genus. 



A doubtful genus and perhaps to be united with the foregoing one. 

 According to the drawing it is to be inferred that the wing which 1 

 here class is somewhat longer, ))eing al)out '2h times as long as broad. 



