288 



The Ohio Journal of Science [Vol. XX, No. 7,, 



EXPLANATION OF PLATES. 



Plate IL 

 Fifth abdominal stemites of males of Hylemyia. 



Fig. 1, fusciceps, one side. 



Fig. 2, cilicrura, one side. 



Fig. 3, fabricii, one side. 



Fig. 4, angustitarsis, one side. 



Fig. 5, hinei. 



Fig. 6, fuscohalterata. 



Fig. 7, atrovittata, one side. 



Fig. 8, aliena, one side. 



Fig. 9, incursa, one side. 

 Fig. 10, denticauda. one side. 

 Fig. 11, parvicornis, one side. 

 Fig. 12, sericea, one side. 

 Fig. 13, appendiculata, one side. 

 Fig. 14, tridens, one side. 

 Fig. 15, substriata, one side. 



Plate II L 

 Hypopygia of males of Hylemyia, caudal view. 



Fig. 16, fabricii. 



Fig. 17, appendiculata. 



Fig. 18, angustitarsis, one superior 



forceps removed. 

 Fig. 19, atrovittata, one side. 

 Fig. 20, parvicornis, one side. 

 Fig. 21, variata. 



Fig. 22, fuscohalterata, one side. 

 Fig. 23, sericea, one side. 



Fig. 24, 



Fig. 25, 

 Fig. 26, 



incursa, one superior forceps'- 



removed. 

 aliena. 



hinei, one superior forceps 

 removed. 



Fig. 27, denticauda. B 



Fig. 28, tridens, one superior forceps 

 removed. ||| jfl 



Fig. 29, substriata, one superior forceps- 

 removed. 



Plate IV. 

 Hypopygia of males of Hylemyia, lateral view. 



Fig. 30, fabricii. 



Fig. 31, cilicrura. 



Fig. 32, angustitarsis. 



Fig. 33, hiriei. 



Fig. 34, appendiculata. 



Fig. 35, fuscohalterata. 



Fig. 36, variata. 



Fig. 37, sericea, forceps only. 



Fig. 38, sericea, ventral processes. 



Fig. 39, atrovittata. ' 



Fig. 40, denticauda. 



Fig. 41, substriata. 



Fig. 42, parvicornis. 



Fig. 43, incursa. 



Fig. 44, tridens. 



