Empididae. 225 



Male. Vertex and frons olive-brown; epistoma blackish grey; 

 palpi blackish. Occiput brown above, grey downwards; above with 

 black bristles, downwards with white hairs. Jowls long, going far 

 down below the eyes. Antennæ black. Thorax olive-brown; on the 

 disc there are about six long, black dorsocentral bristles in each row, 

 and between them shorter hairs; small acrostichal bristles present. 

 Further two to three humeral bristles, a posthumeral, two notopleural 

 and a postalar bristle, all black, but there is no supraalar bristle; 

 besides there are some small hairs in the præsutural depression. 

 Scutellum with two black marginal bristles, and several small hairs. 

 Pleura bright bluish grey, metapleura with tine, whitish hairs. Ab- 

 domen olive-brown above, the sides and the venter bluish grey; it 

 is clothed with short hairs, which are dark above, whitish at the 

 sides and on the venter. The exterior genitalia are somewhat curious; 

 the outer (lower) lamellæ are small, somewhat broad, grey; the inner 

 (upper) lamellæ are large and complicated, each sends a styliform 

 process forwards, which is curved a little upwards and inwards, some- 

 what dilated towards the end, and short-haired ; together the two 

 processes form a fork; backwards each lamella is drawn out into a 

 small, triangular process, which is directed a little downwards; the 

 inner lamellæ are brownish black. Penis is brown, thin, directed 

 straightly forwards. The seventh and eighth ventral segments are 

 rather large. Legs black, very slightly shining; coxæ bluish grey 

 pruinose. The legs are short-haired with brown to blackish hairs, 

 palest below the femora; the hairs are longish below the front femora 

 and towards the end on the hind tibiæ, and these latter have some 



Fig. 94. Wing-part of Cl. rhynchops. 



bristly hairs below. Wings hyahne. Veins black, somewhat strong. 

 Stigma roundish, black or brownish; it is placed just above the base 

 of the cubital fork and thus much nearer to the apex of the wing 

 than in bistigma; the radial vein forms a not large curve below the 

 stigma, and this curve is, in accordance with the place of the stigma, 

 near the apex of the vein; the second cubital cell is slightly longer 



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