Vicinity of Mazon Greek, Illinois. 



319 



Wings long and slender, measuring about 40 mm , 33 mm of 

 which is preserved. By the superposition of all the four 

 wings, the venation becomes very confused and difficult to 

 decipher. Subcosta scarcely extending below the middle of 

 the wing. Costal area comparatively narrow, traversed by 

 about 8-10 regular oblique cross veins. Radius at the same 

 distance from the subcosta as the latter is from the costa and 

 giving rise to 2 S-shaped forked branches, directed toward the 



Fig. 24. 



Fig. 24. A nepitedius giraffa (anterior wing). x2 - 2. 



costal margin. Sector rising near the base and separated from 

 the radius by a broad interstice, traversed in the anterior wing 

 by oblique, in the posterior by straight cross veins. The sec- 

 tor seems to have had but few branches. Media cleft in the 

 anterior wing not far above the middle, its anterior branch 



Fig. 25. 



Fig. 25. Anepitedius giraffa (posterior wing). x 2"2. 



advancing in a blunt angle until near the sector, uniting with 

 it by a short and strong cross vein ; the posterior branch is 

 forked. In the posterior wing the bifurcation of the media 

 seems to take place quite near the base, the anterior branch 

 being independent of the sector and forking again near the 

 end, the posterior apparently remaining undivided. Cubitus 

 forming in the anterior wing a quite free vein cleft into 2 long 

 branches. Of the anal veins I cannot see more than 3, which 

 are almost parallel. 



Holotype in Peabody Museum, Yale University, Cat. No. 38. 



