FEBEUARY. 47 



4. Tahanida. — Trophi greatly developed; antennae, third 



joint very large, remaining joints closely united and 

 slender; eyes very large, and often beautifully coloured ; 

 wings extended horizontally at the side of the body ; 

 body triangular and depressed ; thorax thick ; size 

 large. Locality, woods and pastures. 



5. Bomhyliida. — Proboscis long; antennae close at the 



base, third joint fusiform and flattened; thorax much 

 elevated, making the head appear low ; wings apart 

 when at rest ; body often thickly covered with hairs, 

 short and thick. LocaUty, flowers. 



6. EmpidcB. — Proboscis long and folded beneath the breast ; 



antennae as long as the head, third joint longest ; nead 

 small and round ; eyes large ; wings large ; body nar- 

 row ; legs of moderate length ; size small. Locality, 

 flowers. 



7. Hybotidce. — Proboscis short; head small and spherical ; 



eyes occupying nearly the whole surface ; thorax very 

 elevated ; body narrow ; size small. Locality, flowers. 



8. Asilidm. — Proboscis as long as the head, which is de- 



pressed ; antennae, third joint long, terminated with a 

 seta ; thorax narrow in front ; body long, clothed with 

 stiff bristles ; size large. 



