171. Stigmata of the larvae of Muscoidea. Third instar. (a) Cynomyia cadavarina; ( 6 ) Phormia regina; (c) Chrysomyia macel- 
laria; (d) Musca domestica; (e) Sarcophaga sp ; (/) Oestris ovis; ( g ) Gastrophilus equi; ( h) Sarcophaga sp; (»') Pegomyia 
vicina; (j) Protocalliphora azurea; (k) Hypoderma lineata; ( l ) Muscina stabulans. Magnification for f, g, and k. x 25 ; 
all others, x 50 . 
Muscidos 
313 
