IS* 



The Ungues. Compare those of M. junesta and 

 M. rossi (Fig. 54). 



The Cross Feins. The position of the super- 

 numerary, mid, and posterior veins is not of much 

 importance in distinguishing species ; as this factor is so 

 variable (Fig. 59). 



Larval Characters. This is an important means 

 of distinguishing species otherwise almost indis- 

 tinguishable. 



N.B. One precaution must be taken, viz., there must be no 

 doubt that the larva and mosquito in question are of the same species. 

 To make certain of this examine the full-grown larva (p. 191), and then 

 allow the mosquito to hatch out from it, and then examine the 

 mosquito. 



Characters of the Ova. These are also of great help 

 in distinguishing species. Examine the mosquito and 

 then the eggs (p. 187) when they have been laid. 



