786 PKOi'EEDlNCS OF THE NATIONAL MUSEUM. 



DICTYOMYLACRIS MULTINERVIS (Sellards). 



"Undescrihed Blattiri<irl:r" Sellakdis, Aiiut. Jour. Sci. (4), XV, liK).'!, \>. oil*, 



pi. VII, fig. (>. 

 Sc.hizoblattina innUincrrin Sellakds, Aiiier. Jour. Sci. (4), XVIII, UI04, ]>. 217 



fig. 28. 



Local'dij. — Liiwrence. Kansas. Upper Coal Measures; Le Roy 

 (Lawrence) shales. 



This form, described by Sellards, aorees completely with the genus 

 Dicfyonnjlacris Brongniart, founded on P^uropean forms, represented 

 in the Stephanian of Commentry ))y several species. The erection of 

 a new g'enus, therefore, I consider unnecessary. 



Family NEOMYLACRID^E, new family. 



This group appears to be nearly related to the dictyomylacrids and 

 agrees with the latter to the extent that here also the tii-st anal veins 

 end in the suture of the anal area. The costal area is short and tri- 

 angular, the subcosta not curving backward with the convexity, l)ut 

 forward; all its veins issue from the subcosta near the base. The 

 humeral angle is not strongly produced, but rounded. Radius normal. 

 Branches of the media directed backward. Cubitus normal. Anal 

 area rather long and limited by a curved suture. Hitherto several 

 species were made known from the upper portion of the Upper Car- 

 boniferous of America. 



NEOMYLACRIS, new genus. 



Front wing cordate al)out twice as long as wide. Costal area reach- 

 ing from three-tifths to two-thirds the length of the wing, with only 

 from 5 to (> veins. Radius with 5 or 6 simple or furcate branches suc- 

 cessively running out forward; part of these occupy the free portion 

 of the anterior margin and part the apical border. Media with 2 1 to 

 -t branches diverging posteriorly. Cul)itus with a small number of 

 otfshoots occupying almost the entire free inner margin. Costal area 

 about twice as long as high, extending from two-fifths to nearl}^ one- 

 half the length of the wing, and limited by a curved suture; the first 

 anal vein ends in the suture. Structure indistinct, either stippled like 

 leather or with a tendency to the formation of cross wrinkles. 



Type of genus, jVeomy/acris major., new species. 



