70 



ILLINOIS BIOLOGICAL MONOGRAPHS 



[240 



EXPLANATION OF PLATE 



Cephalic Aspect of the Head 



Coelopa vanduseii. 

 Loxocera pectoralis. 

 Sapromyza vulgaris. 

 Euaresta acqualis. 

 Scatophaga furcata. 

 Borborus cquiniis. 

 Chrysoiityca deiiiandata. 

 Thelaira leucozona. 

 Sarcophaga haemorrhoidalis. 

 Conops hrachyrhynchus. 

 Archytas analis. 

 Hydro taea dentipcs, female. 

 Hydrotaea dentipes, male. 

 Musca domestica, female. 

 Musca domestica, male. 



