EMPID^. 325 



or at an angle of about 45° to hind 



margin of wing ; anal cell with either 



anterior or posterior margin the 



longer, its apical end truncate or 



pointed ; proboscis generally shorter 



than or as long as height of head, 



sometimes longer ; 3rd vein simple 



or forked ; thorax humped or not . . 4. 

 Proboscis as long as or longer than 



head,* projecting downwards ; lower 



branch of 5th vein parallel to hind 



margin of wing, so that anterior 



margin of anal cell is always the 



longer; antennae comparatively elon- 

 gate, generally with 2-jointed style ; 



3rd vein simple or forked Empinje, p. 344. 



Proboscis generally quite short ; if as 



long as head or longer, directed 



straight or obliquely forwards, also 



5th vein meeting anal vein at an 



angle of about 45°, also antennas and 



style very short. Antennae vari- 

 able ; lower branch of 5th vein 



meeting anal vein parallel with, 



perpendicular to, or at an angle of 



45° to hind marghrof wing ; 3rd vein 



simple Ocydromiix^e, p. 362. 



Subfamily HYBOTINvE. 



Eyes contiguous in both sexes ; proboscis varying from shorter 

 than, to a little longer than the head ; palpi of one joint ; an- 

 tennas 3-jointed, with a terminal arista.* Thorax very humped. 

 Wings with axillary lobe well developed ; 3rd longitudinal vein 

 simple, 4th simple or forked ; three or four posterior cells ; discal 

 cell generally present ; f 2nd basal cell equal to or longer than 1st ; 

 anal cell longer or shorter than 2nd basal ; anal vein reaching 

 margin of wing ; lower branch of 5th vein bent down rather 

 suddenly, at an obvious obtuse angle, meeting anal vein approxi- 

 mately perpendicularly to hind margin of wing, making posterior 

 side of anal cell always the longer, and its apical end pointed. 



The characters by which this subfamily may be most easil} r 

 recognised are the elongated anal cell, pointed at tip, in conjunction 

 with the obtusely bent lower branch of the 5th vein ; also by the 

 very humped thorax. They are strongly built Empids and of 

 comparatively large size. 



* Trichopeza is almost an exception, the proboscis being barely as long as 

 the head. 



t Microsania, Zett., a European genus, has a two-jointed style to the 3rd 

 antennal joint and the discal cell absent. 



