Plate I. 

 Diptera 



1. Nephrotoma ferruginea Fabr, (Tipiilidae). x 1 



2. Bihh cdhiperinis Say (Bibionidae), male, female, 



and larva, x 4 



3. AsUus sericeus Say (Asilidae). x 2 



4. \\\\\\) Hy. Mcrodon equestns Fabr. (Syrphidae). 



X 2 



."). Microdon tristis Loew (Syrphidae), x 1 



G. A[)[)le maggot fly. Rluigoleth pomonella Walsh 

 (Triipaneidae). x 2 



