42 MYCETOPHILID^E. 



20. nigra, Mcq. D. N. i. 44. 7 (1825); Meig. subincana ? Curt. 

 Nigra, hirta, alls sublimpidis, halteribus pedibusque testaceis, tarsis 

 fuscescentibus. Long. 2 ; alar. 4 lin. 



Black, hairy. Antennas of the male a little longer than the thorax, 

 of the female shorter. Wings nearly limpid ; first cubital areolet very 

 small, almost square ; subapical vein before its fork very little longer 

 than the first cubital areolet, forked much before the middle of the 

 wing; subanal vein forked much beyond the middle of the wing. 

 Halteres testaceous. Legs testaceous ; tarsi brownish. 



Not rare. (E.) 



21. maura, n. Cinereo-nigra, palpis, halteribus pedibusque testa- 

 ceis, alis sublimpidis, tarsis nigricantibus. Long. 2i; alar. 4 lin. 



Cinereous-black. Palpi testaceous. Wings nearly limpid ; subcos- 

 tal vein not joining the costal, its veinlet a little before the middle of 

 the first cubital areolet; the latter is of moderate size, with very slightly 

 acute fore angles, and equally obtuse hind angles ; subapical vein forked 

 at very little beyond half its length ; subanal forked opposite the first 

 cubital areolet, and much nearer than the fork of the subapical to the 

 base of the wing. Halteres and legs testaceous ; tarsi blackish ; hind 

 tibiae with very minute spines and moderately long spurs. 



Not rare. (E.) 



22. fenestella, Curt. B. E. 641 (1837). Nigra, alis subcinereis, 

 halteribus pedibusque testaceis, femoribus tibiisque posticis apice tro- 

 chanteribus tarsisque nigricantibus. Long. 1^ ; alar. 3 lin. 



Black. Antennas rather stout, a little less than half the length of 

 the body in the male. Wing very slightly greyish ; subcostal vein 

 ending at a little before the middle of the first cubital areolet, not con- 

 nected with the radial ; radial joining the costal before three-fourths of 

 the length ; cubital joining the costal at some little distance from the 

 tip of the latter, which is a little in front of the tip of the wing ; first 

 cubital areolet of moderate size, the fore basal angle slightly acute, the 

 hind basal one slightly obtuse, the outer angles nearly rectangular; 

 subapical vein forked at a little beyond the end of the first cubital 

 areolet ; subanal forked at the base of the wing. Halteres testaceous. 

 Legs testaceous, rather short and stout ; trochanters, tarsi and tips of 

 the hind femora and of the hind tibiae blackish ; hind tibias with very 

 minute spines and moderately long spurs. 



Not common. (E.) 



23. compressa, n. Mas, cinereo-nigra, palpis, halteribus, coxis 

 femoribusque testaceis, alis sublimpidis, abdomine subcompresso, pedi- 

 bus validis breviusculis. Long. 1-^ ; alar. 3 lin. 



Male. Cinereous-black. Palpi testaceous. Antennas rather stout, 

 testaceous at the base, rather less than half the length of the body. 

 Wings nearly limpid ; subcostal vein rudimentary ; radial joining the 

 costal before two-thirds of the length ; cubital joining the costal at 

 some distance from the tip of the latter, which is very little in front of 



