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hrownish. Legs with the coxa' and trochanters pale; femora and 
tibia' light brown; tarsi towards the tips dark brown. Wings 
with a grayish yellow stiffusion; stigma joale brown, indistinct; 
veins dark brown. Venation about as in cognatella: Sc ending 
just before the origin of the sector; cell i?2 very lar-ge; cross-vein 
r-m \-ery long; cell 1st Mi open by the atrophy of the outer de- 
flection of Ms; basal deflection of Cm at the fork of M. 
Abdomen dark brown, the tergal segments with the apical 
third yellow so the abdomen appears broadly annulated; hypo- 
pygium yellowish. Hypopygium of the cognatella type but dif- 
fering notably in the details of structure: outer pleural lobe with 
long bristles on the outer half along the margin and a single stout 
bristle on the outer face near the base; pleural appendages as 
follows: outer appendage {2) (Fig. 1) very long and slender, with 
numerous hairs along the margin; pleural appendages 3 (Fig.- 2) 
bifid as in cognatella, but shorter and more powerfully constructed, 
the dorsal arm blackened and strongly chitinized at its tip, the 
two arms about equal; appendage d (Fig. 3) is rather stout with 
about, three tubercles before the apex each with a long bristle; 
at the tip with a long, curved bristle. Penis-guard (Fig. 4) as 
seen from the side shaped as in figure. Gonapophyses (Fig. 5) 
with an acute spine near the base. 
6 
Fig. 7. — 1-5, Gonomyia kansensis, n. sp., hypopygial details; 6, Molophilus ursus, n. sp. 
ventral hook of hypopygium. 
