762 



PROCEEDINGS OP THE NA TIONAL MUSEUM. 



SYSCIOBLATTA MISERA, new species. 



LocaUty. — Wills Creek, near Steubenville, Ohio. Conemauoh for- 

 mation; shales above the Ames limestone. 



Front wino-, 28 mm. long, 2i times as long as broad, costal area 

 attaining three-fifths the length of the wing. Superior branch of the 



Pig. 66.— SYSCIOBLATTA MISERA. 



radius with 5 offshoots, inferior branch probably with 6 twigs. Media 

 with 2 or 3 short branches. Cubitus with 4 furcate branches extend- 

 ing backward and one branching oft' anteriorly. Veins bordered, 

 Iloloty/x.—Cfxi. No. 3S658, U.S.N.M. 



SPILOBLATTINA Scudder. 



Very nearh' related to the preceding gener-a. Front wing rather 

 slender, 2^ to 8 times as long as broad. Costal area narrow, reaching 

 one-half to three-fifths the length of the wing. Radius vaulted, attain- 

 ing not quite to the extremit}" of the anterior margin, with a larger 

 number of branches directed forward, the first of which separates into 

 4 to 5 twigs. Media first divides below the middle of the wing into 2 

 main branches, the twigs of which again run off backward. The 

 cubitus is ver}^ strongly vaulted and forms about 8 to 10 simple 

 branches. Intercalary venation finel}^ reticulate. Interspaces between 

 the main veins made wider by strong fenestration. 



Type of genus, Spilo})Jattina gardineri Scudder (restricted). 



SPILOBLATTINA GARDINERI Scudder. 



Spiloblattina gardineri Scudder (part), Proc. Acad. Nat. Sci. Phila., 1885, p. ."6; 

 Zittel's Handbiich, 1885, p. 754, fig. 938; Mem. Boston Soc, IV, 1890, p. 

 461, pi. XLi, fig. 10. 



Locality. — Fairplay, Colorado. Lower Permian. 

 In my opinion, Scudder has united several different forms under this 

 name, of which the one first figured I regard as the type of the species. 



SPILOBLATTINA PERFORATA, new species. 



Spilohlattina gardineri Scudder (part), Proc. Acad. Nat. Sci. Phila., 1885, p. 86; 

 Mem. Boston Soc, IV., 1890, p. 461, pi. xli, fig. 6. 



Locality. — Fairplay, Colorado. Lower Permian. 



