Family 19. ACROCERID/E. Small-headed Humpback Flies. Their larv;v are 

 parasites in spiders or their cocoons, and live in their bellies. 



ACROCERA. Tophorncd Fly. 



I. A. fasciata. }% in.; black; body yellow, with three black bands; feeler 

 on the top of the head. 



Xemestritmkt are very rare bee-like flies with long trunks. 



Family 20. BOHBYLlAD/e. Bee Flies. Hover Flies. They feed on the honey of flowers, are very 

 swift flyers, and stop suddenly in the air. Their larvae lives as parasites on other insects. 



ANTHRAX. Mourning Hover Fly. 



1. A. simson. 4 ' ! black ; chest grayish red ; body silver spotted ; wing 



clear, with brown spots. 



2. A. pluto. l /2 in.; black; body with intern upted while band; wing 



with black blotches at base and point. 



3. A. lialcyon. 'j in. ; black, with yellow hair; wing brown, with a spot 



in the middle, the point and edge cells clear. 

 -1 . .1. tc/fii>iipeiniis. }.? in. ; black, with yellow hair; wing dark brown; 



legs reddish. 

 e;. A. oedipus. -fa in.; black; body with white spots; wing clear, with 



black blotches and spots. 



(36) 



