5 o MALARIA 



ing begins correspondingly early. On February nth 

 Anopheles mosquitoes were seen emerging in numbers 

 from under a schoolhouse which had afforded a safe 

 hiding place against the rains, which place had prob- 

 ably been sought early in November. 



The above and other observations give evidence that 

 the Anopheles mosquitoes which have been in hiber- 

 nation on coming out of their shelters are active for a 



Fig. 24. Tin cans, tubs, and barrels in which water may stand. Other places in which 



mosquitoes breed. 



few days even by daylight (noonday) and bite fiercely 

 during that time. In a few days, apparently, the insects 

 revert to their normal habit, i.e. flying and biting at 

 night only, although both Anopheline and Culicine 

 mosquitoes will bite in shady places during the day if 

 given the opportunity. 



Breeding Places for Anopheles. --Unquestionably the 

 most attractive situations for Anopheline mosquitoes 

 to breed in are marshy meadows (pasture land), where 

 the water is just shallow enough to allow grass and 

 other low herbage to protrude above the surface (Fig. 



