,'-:- ; 



MuscQ domesl 



CQ 



SarcoplYago 

 hcTemorrhoidalib 



Drosophiio 

 melanoqasler 



FLIES COMMON ABOUT HOUSES 



Here are shown some of tlie more important flies whicli are common about houses in districts where the entomo- 

 logical side of sanitation is not given proper attention. M. domestica is the so-called house fly — better called filth fly or 

 disease fly, because it breeds in filth and carries disease germs to our food. 5'. calcitrans is the biting house fly. Its 

 superficial resemblance to M. domestica and its biting habits have given rise to the error in supposing that the latter 

 species is adding to its many sins by sucking blood. On account of calcitrans being more troublesome during rains, it is 

 sometimes called the storm fly 



