84 
27. 
28. 
29. 
31. 
3a. 
33. 
34. 
$53 
36. 
DIPTERA 
Third vein furcale  . . . iU. x M REA 
Third vein simple (Pl. 6, Fig. 57). i; 
Third vein furcate 
Third vein simple. . . 
Dorsocentrals uniserial, even. in the middle the nis 
acrostichals usually absent, when the dorsocentrals occur in 
more than one vow the males are dichoplic . . . . 
Dorsocentrals bi- or pluriserial, at least along. the middle of. the 
ow, acrostichals usually present, when but one row of dorso- 
NON aua Be male ave hoop. . . . ... s 
. Eyes of both sexes separated or at most subcontiguous, the facets 
small and uniform. : 
Eyes of the male contiguous, fie bir dei lipid; no 
acrostichals . .. . : * 
No fropleural or iehlichrgl bristis, dale dee du 
short and stiff, anal lobe of. the wing rounded ; hind femora 
not thickened. .. .. x 
Propleural and motopleural bristles Nou; ddl ud id 
angle of the wing rectangular... . . ds 
No acrostichal selule ; head. almost. always NV dd, the 
occipul draton oul ; more or less yellow species... . . . 
Acrostichal setule occurriug as a simgle median. row, rarely 
absent or closely biserial ; head. globose, the occiput uot conical; 
cinercous blach species, the hind kuees of the male usually with 
sirong apophyses . . . MUS . 
Hind femora strongly lhichined ; iailnisi but biliform; 
blach sbocies. .— . . . vue upra P 
Femora not thichened ; iiilmsdl Bairs sifttm; largely jue 
sbedes 2 0... . 40a 
Discal cell blunt eMiiatiy; idle with die drnaedo: scutellar 
bristles cruciate.. . Kcay dica 
Discal cell sharp apically ; indli- not TES icis drislls 
not cruciate . : 
Fourth vein. interrupted before ici marginu Um ihe ting, pue of 
third vein short and nearly erect, discal cell blunt, anal angle 
rectangular; eyes of the mal contiguous; femora not thickened ; 
legs of female pennate ; acrostichals sometimes wanting. 
Fourth vein reaching the margin, in livida the fourth and inter- 
calary veins interrupted at the. margin; acrostichals present, 
bi- ov pluriserial |. ent 
Anal angle of the wing broadly Pitti; pA narrow; eyes id 
both sexes narrowly separated, in (he males sometimes sub- 
contiguous ; one presutural. bristle; body shining blach, with 
fine pile and reduced. bristles ; hind legs long, the. metatarsi 
more or less swollen. . . 4708 
Anal angle not. obtuse but more or less futnpdir; fies broad, 
Genus EwurruonrHa, Coquillett. | 
Genus Ngocora, Coquillett. * 
(Genus Ewris, Linnzeus.) 
(Genus RuawPHoMY1A, Meigen.) 
Subgenus XANTHEMPIS, Bezzi. 
Subgenus ENorLEMPis, Bigot. 
Subgenus Avackosricius, Bezzi. 
Subgenus Pus. nov. subgen. 
Subgenus eser. Bezzi. 
Subgenus HaPLoMERINX, Bezzi. 
Subgenus CorroPHLEBIA, Bezzi. 
Subgenus LissEMPIs, Bezzi. 
