ANOPHELINE OR MALARIA MOSQUITOES 49 



actively living about in a church on the 1st of Janu- 

 ary. Since all breeding had ceased in late October, 

 it must be assumed that these were hibernated in- 

 dividuals that had been induced to leave their shelters, 

 owing to the appearance of balm}' days between the 



Fig. 23. A prospecting hole, — often a convenient breeding place for mosquitoes. 



heavy California rains. In the colder Eastern states 

 there are seldom days in winter during which it is 

 balmy enough to induce mosquitoes to come forth 

 from their places of hibernation. 



The first cases mentioned are normal responses to 

 the usually early spring days in California, when breed- 



