Favourite breeding grounds. 



as regards their breeding grounds, into at least three groups, via. 

 (I) those which breed almost exclusively in running water, (2) those 

 which breed in shallow muddy pools in the vicinity of dwellings 



STC UNS~ 



if. 



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CANT 



Plan of RoyalArtillery Lines in Mian Mir. 



and in tins and gumlahs of water ; and ( 3 ) those which breed at 

 some distance from houses in deep natural pools with much aquatic 

 vegetation and in marshes. 



The favourite breeding grounds of some of the species of Indian 

 " anopheles " may now be summed up : 



A. listoni. The larvae of this species are found most frequently 

 in quickly running streamlets with grassy edges. Their presence 

 in a stream can be detected only by dipping with a tin among the 

 grass and vegetation at the edge of the stream and in the pools and 

 backwaters. 



A. culicifacies. This species is essentially a breeder in slowly 

 moving water. It will be found in canals, ditches and streams when 

 quite absent from neighbouring shallow stagnant pools. Irrigation 



so] 



