PLATE XIII. 



PROC. ENT. SOC. WASH., VOL. XVII. 



EXPLANATION OF PLATE. 



Fig. 1. Coquillettina plankii, head of male; a, enlarged veiwof antenna. 



Fig. 2. Wing of same. 



Fig. 3. Head of female; 6, enlarged outline of right antenna from 

 inner side. 



Figs. 4 and 5. Lateral and dorsal views of pupal, anal stigmata with 

 detail showing irregular outline of slits. 



Fig. 6. Wing of Acemyia tibialis Coq.; r, outline of antenna of samo. 



10G 



