452 THE BLOWFLIES OF NortH AMERICA 
PLATE 40 
Phaenicia caeruleiviridis (Macquart) 
Larva 
Cephaloskeleton, second instar. 
Cephaloskeleton, third instar. 
Posterior spiracle, third instar. 
Phaenicia mexicana (Macquart) 
Posterior spiracle, third instar. 
Cephaloskeleton, second instar. 
Cephaloskeleton, third instar. 
Anal area, third instar. 
QW & 
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