80 MISC. PUBLICATION 336, U. S. DEPT. OF AGRICULTURE 
. ___}__ Lateral comb 
Lorsa/ 
Bivona —— —47a/ 
us “Spine. ze SCHITIENT 
= Dorsal plate —— JSS Se, 
Ventral tut} WGA WME Oe TX NS = 
Dorsal hair turf -- ey Ses 
FieurE 24.—A, Posterior portion of abdomen of larva of Acdes vexans; B, anal 
segment of larva of Aedes mitchellae; C, same of Wyeomyia mitchellii. 
