DIPTERA — TIPULINA 



159 



(P^9f 



Fig-ure 172 Culiseta incidens. 1, larva; 2, antenna?: 3, mentum: 4, siphonal spines 

 showing- variation; 5, scale of eighth abdominal segment; 6, eightli and ninth ab- 

 dominal segments and siphon; all enlarged. 



