Fig. 39S. 



Bee-flies and flower-flies. — a, Bomhylius sp. ; b. Pombylius sp. ; c, Anthrax sp. ; d, 

 Eiistalis trausvcisiis : e. Etistalis ti-mix ; f, Eristahs saxorum ; g, Syritta pipiens. Some- 

 what enlarged. From a photograph. 



