Dolichopodidae. 23 



below; hind metatarsus much shorter than the 

 second joint; posterior femora without preapical 

 bristles 33. Acropsilus. 



16. Arista dorsal 34. Tinophilus. 



— Arista subapical, ahiiost apical . 35. Schoenophilus. 



Obs. I may remark here, that in the foUowing descriptions I 

 speak of epistoma shortly as the name for the whole face below the 

 antennæ and between the eyes, thus in reality epistoma ^- clypeus. 

 With regard to the hypopygium, I use the terms dorsal and ventral, 

 anterior and posterior, as if the hypopygium was stretched out towards 

 behind ; my terms indicate thus the real dorsal and ventral sides, and 

 anterior and posterior ends, but it must be remembered, that in the 

 natural, inflexed position of the hypopygium, the position of the parts 

 is inverted, the real dorsal side turned down, the ventral upwards, 

 the anterior end being behind and the posterior pointing forwards. 



I. Dolichopodinae. 

 1. Sciapus Zell. 



{Psilojnis Meig.) 



Species of slender shape, with a somewhat long and narrow 

 abdomen. Head as broad as or broader than thorax, generally some- 

 what to considerably broader than high, rarely a little higher than 

 broad {platypterus); it is short, flat behind. Vertex rather deeply 

 excavated, and the ocellar tubercle prominent. Frons a little decreasing 

 in breadth towards the antennæ, or generally with almost parallel 

 horders. There are ocellar, outer vertical and postvertical bristles; 

 on the posterior side of the ocellar tubercle there are a pair of small 

 bristles. Eyes large ; they are short almost microscopicaliy hairy, most 

 distinctly downwards ; the facets generally of equal size, but when the 

 epistoma is narrowed, the facets are a little enlarged towards the 

 epistoma in the male, and also slightly in the female {platypterus). 

 The eyes are separated in both sexes, the epistoma more or less 

 broad, sometimes broader in the female than in the male, but generally 

 of the same breadth. Postocular hairs fine, only just above a little 

 stronger; the lower part of occiput covered with dense hairs, The 

 antennæ are inserted somewhat above the middle, near to each other; 



