g6 Insects and Disease 



nearly so particular, some even claiming that it 

 prefers foul water. I have seen them breeding in 

 countless thousands in company with Stegomyia 

 scutellaris and Culex jatigans in the sewer drains in 

 Tahiti in the streets of Papeete. As the larvae feed 

 largely on bacteria one would expect to find them 

 in exactly such places where the bacteria are of 

 course abundant. 



The fact that they are able to live in any kind of 

 water and in a very small amount of it well adapts 

 them to their habits of living about dwellings. 



So far as known the members of these two 

 genera are the only two that are concerned in the 

 transmission of disease in the United States. In 

 other countries other species are suspected or 

 proven disseminators of certain diseases, but these 

 will be discussed in connection with the particular 

 diseases in later chapters. 



OTHER SPECIES 



The many other species of mosquitoes that we 

 have may be conveniently divided as to their 

 breeding-habits into the fresh-water and the 

 brackish-water forms. Among the fresh-water 

 kinds some are found principally associated with 

 man and his dwelling places, others live in the 

 woods or other places and so are far less trouble- 



