FLIES FREQUENTING HUMAN F/ECES 249 



This list is an actual record of observations in America, and 

 should not be considered as indicating definitely the habits of 

 the species or their relative abundance under other conditions or 

 in other places. Undoubtedly some of the species captured on 

 excrement, but not reared from it, are excrement breeders, while 

 the presence of others was probably accidental. Those species, 

 which are found not uncommonly in houses, are marked *. 



In India M. domestica, M. enteniata, M. nebulo, and several 

 species of the genus Pycuosoma breed abundantly in trenches 

 containing night soil. 



Coquillet (1900) identified species of flies reared from 

 cow manure. Several of these species also breed in human 

 excrement. 



CHAPTER XXVII 



PREVENTION AND CONTROL OF FLIES 



It is evident that the best method of controlling flies is to 

 eliminate their breeding places. That they can be controlled is 

 without question, but the work can only be done by united 

 efforts in combination with suitable regulations. In many parts 

 of the United States the requisite machinery has been established 

 and considerable progress in the control of flies has been made, 

 but up to the present nothing of the kind has been attempted 

 in England, and some time must elapse before any noticeable 

 results can be obtained. Before discussing the application of 

 preventive measures to the breeding places it may be best, 

 therefore, to consider the methods available for dealing with flies 

 which enter houses. 



Measures against adult flies. 



Flies may be caught in considerable numbers on fly papers, 

 of which the non-poisonous varieties should be preferred, or in 

 balloon or other traps, baited with syrup or stale beer, or they 

 may be destroyed by taking advantage of the fact that flies 



