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Nigeria by day. Possibly certain species feed more 
readily by day than others. 
We have ourselves seen on rare occasions M. rossi 
attempting to feed in the daytime, and Gray says 
that Ce. albipes when disturbed will bite at any time 
of the day or night. 
On the whole, however, the Anophelinae are 
strictly nocturnal in their habits, nor do they hover 
around lamps as has been supposed. Of A. bifurcatus, 
Blanchard states that it bites fiercely at dusk, but at 
night practically not at all. At dawn, however, it 
begins again, and it bites at all times in shady places, 
outhouses, etc. 
Distance of Flight 
The maximum distance that Anophelines can fly 
requires further study. In questions of flight, the 
species of mosquito should always be noted. In 
certain villages in India studied by us, Mym. culici- 
facies , Nyss. stephensi , and Nyss. fuliginosus were 
always present in abundance, if there were extensive 
breeding-grounds within quarter of a mile. Where 
villages were distant half a mile from extensive breed¬ 
ing-grounds, they contained few or no Anophelines. 
The only exceptions to this rule were when breeding- 
places had only recently dried up. In the case of the 
above species they undoubtedly fly fairly readily 
quarter of a mile, but half a mile appears to be beyond 
the normal distance of flight. 
Relation to Colour, Odour of Objects, Etc. 
Anyone who, in the tropics, has left his wardrobe 
open at sunrise and then closed it, and again examined 
it some time later, will have often observed the well- 
known fact that, on his white clothes, few or no 
