ORDER DIPTERA : THE NEMATOCERA, ETC. 63 



On the abdomen, hair-like scales, broad squames, and 

 long narrow squames. In the majority of the subfamily the 

 abdomen is closely invested with broad imbricating squames ; 

 in many species of Anopheles there are scattered squames 

 of the long narrow kind; and in some Anopheles there are 

 no true scales at all. 



On the wings the scales have a wide range of specific 

 form, from long narrow scales hardly different, except in 

 stiffness and regularity, from hairs, to broad squames and 

 disks of diverse shape. 



The names of the genera of Culicidce are, with a few 

 notable exceptions, so devoid of significance, and they are so 

 often constructed in defiance of the rules of composition, that 

 it is better not to inquire into their derivation. 



