142 
frequently used ; also the relative positions of the 
point where the auxiliary vein cuts the costa] 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 . 9 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 :— 
1. Coxa and trochanter : small pieces ’ at the 
origin of the legs (Fig. 50). 
