83 



EXPLANATION OF PLATE III. 

 Figure 1. 



Tabanus lineola Fabricms. a, female; b, male; (Drawing 

 by Miss L. C. Riddle). 



Figure 2. 



Tabanus costalis Wiedemann, a, female; b, male; (Draw- 

 ing by Miss L. C. Riddle). 



Figure 3. 



Tabanus quinquevittatus Wiedemann, a, female ; 6, male ; 

 , Drawing by Miss L. C. Riddle). 



Figure 4. 



Bembex belfragei Cresson. (Drawing by Miss L. C. Riddle). 



Figure 5. 



Front view of the head of Tabanus quinquevittatus repre- 

 senting the coloration of the eyes. Black represents purple, 

 v/hite represents green. 



Figure 6. ; 



Front view of the head of Tabanus lineola. 



Figure 7. 



Front view of the head of Tabanus costalis. 



Figure 8. 



Brunneria borealis Scudder. The specimen from which the 

 drawing was taken is immature. .(Drawing by Miss L. G. 

 Riddle). 



Figure 8 is natural size, the others are enlarged. 



