Plate XL VIII 

 Prairie Species 



Fig. 1. Coiiopid fly, Pliysocepliala tihialis, and side view of head. 



(Washburn, Rep. State Ent. Minn.) 

 Fig. 2. Sciomyzid fly, Tetanocera plumosa, and profile of antenna. 



(After Washburn, 1. c.) 



