Appendix A. 



71 



(Reduced from original) 



as the proboscis instead of much shorter, or mucli longer ; and the wings of 

 all tlie species found in this vicinity are spotted (see lower part of Fig. 4). 



Fig. 4. — Wing of Culex (above) and of Anopheles (below). 



These differences can be easily made out with the naked eye. Another point' 

 of distinction is that when Anopheles is at rest on a wall it sits with its 

 body almost at a right angle; while Culex holds its body parallel with the 

 surface it rests on (Fig. 5). Anopheles prefers for its eggs pools of rain 



1 



Culex. Anopheles. 



Fig. 5. — Postures of Mosquitoes silling on wall. 



water on the ground, but will breed almost anywhere else, when such pools 

 are lacking. 



5 



