Habits and Food 91 



quitoes, but they have difficulty in finding their 

 way out of buildings. In the daytime, they are 

 more commonly found in the bedrooms than in any 

 other part of the house. 



Some people are more attractive to Anopheles 

 than others. One of the sanitary inspectors was 

 known to possess this quality, and the arms of 

 three men were placed around his bare arm, so 

 that any Anopheles desiring to bite him had to 

 find their way to him through an inch wide opening 

 between the bared arms of two other men. Several 

 Anopheles albimanus did this. Some time later 

 the same person and two observers trying to locate 

 the principal source of Anopheles causing the 

 influx at Cristobal were not bitten once from dusk 

 to nine o'clock. A brown horse nearby was 

 examined and found to be well covered with 

 Anopheles albimanus. The observers sat down 

 near the animal, but failed to attract a single 

 mosquito in thirty minutes. They then began 

 to catch the Anopheles that were biting the horse, 

 using chloroform tubes: the mosquitoes attacking 

 the horse arrived more quickly than they could be 

 captured and kept the party busy. The catch- 

 ing was continued for an hour, and during that 

 period none of the men were bitten. They had 

 lamps and noticed that no mosquitoes settled on 



