Vicinity of Mazon Creek, Illinois. 

 Spaniodera elatior, new species. Fig. 10. 



307 



Prothorax slender, measuring 8 mm . Anterior wings 38 mm . 

 Subcosta strongly shortened, scarcely reaching the outer half 



of the wing. 



Cross veins in the costal and subcostal area much 



Fig. 10. 



Fig. 10. Spaniodera elatior. x 2. 



less numerous. Sector far removed from the radius, split into 

 3 twigs. Media cleft near the base into an anterior forked and 

 a posterior simple. branch. Cubitus with 4 branches, the third 

 of which is forked in the right wing. Anal area filled by 7-8 

 simple veins. 



Holotype in Peabody Museum, Yale University, Cat. No. 26. 



