EXPLANATION OF PLATE IL 



Fic. 1. Ei,'g, a few hours after being laid. 



F[(.. 2. Egg, before hatching. 



Fjc. 3. Pupa, ventral view. 



Fig. 4. Pupa, resj)iratory appendage. 



Fili. ."). Pupa, jîosterior end, lateral view. 



Fic. fi. Adult üy, at rest, dorsal view. 



Fi(i. 7. Adult fly, at rest, lateral view. 



Fk;. 8 iS: 9. Adult fly, natural size. 



Fi(i. 10. Adult, antenna. 



