Dolichopodidae. 231 



margin. Scutellum bare, or hairy {Lasiargyra Mik), witli four strong 

 marginal bristles, the lateral often smallest, Abdomen somewhat long, 

 cylindrical or almost so, a little narrowed towards the end; the first 

 dorsal segment is short, and the first ventral segment Hkewise very short, 

 in the male it has one or two tufts of long hairs ; the anterior part of 

 the second ventral segment is almost quite separated from the larger 

 posterior part by a membranous space. In the male there are six 

 visible dorsal segments, from the second of about the same length or 

 slightly decreasing in length backwards; the sixth is alvvays smaller; 

 the first four ventral segments are in length answering to the dorsal, 

 the fifth and sixth are more or less membranous and folded up to 

 receive the hypopygium; the seventh abdominal segment is small, 

 unsymmetrical and hidden. Hypopygium somewhat small and roundish, 

 and resembling that in Chrysotus; it is not pedunculated, curved up 

 under the fifth and sixth segments, and as usual with the dorsal side 

 downwards ; the eighth segment has short hairs, and sometimes longer 

 bristles; the hypopygium has the cavity more posterior than ventral; 

 the outer lamellæ are small or somewhat small, generally narrow, and 

 hairy; there are generally broad and more or less oval, somewhat blade- 

 shaped ventral lobes, and between them the inner lamellæ may be seen, 

 but they are generally hidden. Penis is long and strongly cuived, 

 so that it may be directed backwards when the hypopygium is in 

 situ. The female abdomen is more robust and more pointed, it has 

 five normal segments, and as usual three hidden, and it terminales 

 with some small spines above, and below them a pair of larger 

 spines or styles. There are dot-like impressions at the side margins 

 on the second to sixth segments in the males; they are less obvious 

 or wanting tov^ards the end of abdomen in the females. The ab- 

 dominal segments have hindmarginal bristles. Legs somewhat slender, 

 hind metatarsi from a little shorter to considerably longer than the 

 second joint; the anterior coxæ have dense, bristly hairs, the hind 

 coxæ have on the outer side a vertical row of from two [grata, non 

 Danish) to several bristles, decreasing in length downwards; the 

 femora have in the males more or less dense and long, bristly hairs 

 below or on the sides towards below; preapical bristles on the posterior 

 femora are only rarely marked between the strong hairs; in the females 

 the femora are mainly short-haired, and preapical bristles may be more 

 distinct; tibiæ with more or fewer bristles on the dorsal side, gener- 

 ally in two rows, middle tibiæ also with distinct bristles below; 

 further the tibiæ have apical or preapical bristles; the front metatarsi 

 have bristly hairs below, which are quite short, or longer, and in the 

 latter case generally shorler in the female; hind metatarsi without 



