446 Tuer BLOWFLIES OF NortH AMERICA 
PLATE 37 
Phormia regina (Meigen) 
Larva 
. Cephaloskeleton,. first instar. 
Cephaloskeleton, second instar. 
Cephaloskeleton, third instar. 
Posterior spiracle, second instar. 
Posterior spiracle, third instar. 
Protophormia terrae-novae (Robineau-Desvoidy) 
Larva, third instar. Posterior spiracle. 
Bae ood Pp 
