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most concentrated attention is, as a rule, needed), 

 the thatch should be carefully disturbed with the 

 hand or a short stick. 



Observe carefully any insects which fly out, 

 and note where they settle. Choose especially 

 portions of the thatch which are not too dark to 

 prevent one seeing clearly, but are not too much 

 exposed to light. 



Train, if possible, one or more intelligent 

 natives to detect the insects and to collect them, 

 as shortly described. It is a good thing, if even 

 only a very few Anophelines have been found by a 

 personal inspection, to offer a small reward to any 

 persons in the village who will undertake to 

 collect them. One or two tubes should be left 

 for this purpose. 



To Detect Culex 



Examine the walls of houses, out-houses, and 

 native huts. Especially examine clothes hung up 

 in native huts. Many specimens of Culex, resting 

 in their characteristic hunchback attitude, will 

 probably be detected. Especially on dark clothing, 

 old blankets, inside leather boots or boxes. 



Mosquitoes seem especially fond of the smell (?) 

 of leather. 



To Detect Taeniorhynchus 



These are best caught by sitting, with a light, 

 near a marsh or grassy land. A wall, or tent, or 

 cloth hung up should be at hand, and kept slightly 

 illuminated with a lamp. They may be captured 

 as they settle upon the sheet or upon oneself. 



