142 



frequently used ; also the relative positions of the 

 point where the auxiliary vein cuts the costal vein, 

 and the point where the fifth vein cuts the posterior 

 margin. As a rule, the position of this first point is 

 much nearer the base than that of the second point, 

 but in a few instances, e.g., My. sinensis, they almost 

 coincide. 



Fig. 53. Wing of Anophelinae : 



Upper = Supernumerary cross-vein 



Lower = Posterior cross-vein 



Anterior forked cell = First forked cell 



First posterior forked cell = Second posterior cell 



Second posterior forked cell = Anal cell 



With regard to the positions of the upper, middle, 

 and cross veins, it will be found that even in the same 

 species there is no constancy, and that they are of 

 little specific importance. 



THE LEGS 



These consist of the following segments : 

 Coxa and trochanter : small pieces at 



i. 



the 



origin of the legs (Fig. 50). 



