N... 1441. AMERICAN I'ALKOZOIC INSECTS— HANDLIRSL'H. 71U 



PALyEOBLATTA PAUCINERVIS (Scudder). 



ArrJihiiyldcrix /xiiiciiicrris >^cvi)\>K\{, Mem. Bo^jtoii Sue, IV, IS!M), [i. 441, pi. xxxi, 

 fig. 5. 



Londiiij. — Mazoii Creek, iiejir Morris, Illinois. Penusylvunian; Kit- 

 tan nintr ? (Allegheny) stage. 



Jlolotype.- C'Ai. No. 3S0«»1. T.S.N.M. 



APHTHOROBLATTINA, new genus. 



Similar to the foregoing genus, but ditters in the somewhat more 

 abundant l)ranching of the veins, the narrower costal area, and the 

 more regidar cross veins. The sul)costa reaches about two-thirds the 

 length of the wing. Radius and sector are divided in the typical man- 

 ner; the former with about 5 small veinlets directed forward, the lat- 

 ter separated into 4 to 6 branches. The media separates about in the 

 middle of the wing and forms about -t offshoots. The 7 to 8 branches 

 of the cubitus extend to the inner margin. Anal area slender; cross 

 \eins not very compact and somewhat irregular, but not so strongly 

 reticulate. Body like that in Pala^ohlatta, Front wing scarcely 2i 

 times as long as broad. 



Type of genus. Aj>]itJi<>i'(>l>l(itthHi fasdr/crd (Scudder). 



APHTHOROBLATTINA FASCIGERA (Scudder). 



BlaUina fascigera Scudder, Proc. Boston Sot'., XIX, 187iS, p. 2.'{S. 

 Gerahlattina fancif/em SruDDEK, Mem. Bcstoii See, III, 1S79, p. W'A, \>\. vi, figp. 

 1,2. 



Locality. — Campbell's Ledge, near Pittston. Pennsylvania. Near 

 top of Pottsville; ui)per transition group. 



This form was pointed out by Scudder as the "oldest" ])lattid. 



Two species from the middle of the Upper Car))()niferous of Europe 

 also belong in this genus. 



6Wy/>t\v. — Cat. No. 3S05S, U.S.N.M. 



POLYETOBLATTA, new genus. 



Similar to the genus Aphtliorohlattina. Anterior margin of the front 

 wing strongly curved. Costal area nai'row^ extending two-thirds the 

 length of the wing. Radius with 5 stouter branches directed upward; 

 sector arising above the middle of the wing and divided into 3 forks, 

 all of which end in the apical border. Media with 2 simple and 1 fur- 

 cate branches directed toward the inner border and branching off back- 

 ward from the main stem. The 5 simple oV)lique branches which 

 extend downward from the strongly arcuate cul)ital vein occupy only 

 the middle third of the ])osterior margin. Anal area small and slender, 

 continuing only one-third the length of the wing, with ])ut 4 or 5 veins 

 ending in the inner margin. Interspaces tilled up with very regular 

 and delicate cross veins. Front wing fully 2i times as long as broad. 

 Proc. N. M. vol. xxix— 05 -50 



