454 THE BLOWFLIES OF NortH AMERICA. 
PLATE 41 
Phaenicia pallescens (Shannon) 
Larva 
Cephaloskeleton, first instar. 
Cephaloskeleton, second instar. 
Cephaloskeleton, third instar. 
Posterior spiracle, third instar. 
Phaenicia sericata (Meigen) 
Sab > 
Larva 
Cephaloskeleton, second instar. 
Cephaloskeleton, third instar. 
Posterior spiracle, third instar. 
