ILLINOIS BIOLOGICAL MOXOGRAPHS 



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EXPLANATION OF PLATE 



Cephalic Aspect of the Head 



Coclopa vanduzeii. 

 Loxocera pectoralis. 

 Saproiiiy::a vulgaris. 

 Euaresta aequalis. 

 Scatophaga furcata. 

 Borborus equiims. 

 Cbrysoviysa dcmandata. 

 Thelaira leucosona. 

 Sarcophaga haeiiwrrhoidalis. 

 Conops hrachyrhynchns. 

 Archytas aiialis. 

 Hydrotaea dentipcs, female. 

 Hydrotaea dentipes, male. 

 Musca domestica, female. 

 Miisca domestica, male. 



