510 Dr. C. P. Alexander on 
indicated only posteriorly ; scutal lobes and postnotum 
slightly darker. Pleura obscure brownish  testaceous. 
Halteres brown, the base of the stem paler. Legs with the 
coxze pale yellowish brown ; trochanters testaceous ; femora 
and tibize pale brown, the tarsi darker. Wings with a 
strong brown tinge, the stigma oval, darker brown ; veins 
dark brown. Venation : Se, ending opposite or just beyond 
the origin of Rs, Sc. some distance com the tip of Se, the 
latter Blune variable, from one-half to nearly as long as 
the basal deflection of Cu,; cell lst M, closed, the ee 
deflection of Cu, at the fork of M. 
Abdomen pale brown, the sternites a little more yellowish. 
Usually both sternites and tergites appear faintly bicolorous, 
the bases being paler than the dark brown caudal margins 
of the segments. Male hypopygium with the rostriform 
appendage bearing, instead of the usual two spines, a fascicle 
of about nine such spines, the apex of the appendage 
beyond these spines long and slender. 
Hab. New Zealand (both Islands). 
Holotype, 8, Ohakune, altitude 2060 feet, October 1 ¢. 
1921 (T. R. Harris). 
Allotype, 2, Governor’s Bay, Banks Peninsula, Canter- 
bury, October 5, 1921 (J. W. Campbell) ; alcoholie. 
Paratopotype, 1 3; paratypes, 15 8 2, with the allotype, 
alcoholic ; 1 ¢, Dunedin (Waitati), Otago, October 24 
1921 (MW. N. Wait). 
2 
Molophilus luteipygus, sp. n. 
General coloration pale reddish brown ; front yellow, 
vertex and occiput brownish grey ; scutellum obscure yellow ; : 
postnotum and pleura dark brown; halteres yellow; wings 
with a strong yellow tinge ; vein | nd A elongate ; abdomen 
dark brown, ‘the hy ypopygium obscure yellow. 
Male. —Length 2 ‘8 mm. ; wing 3°8 mm. 
Female.—Length 3 mm. ; wing 4—4°1 mm. 
Rostrum pale brown, the palpi darker brown. Front 
yellow. Antenne dark brown, short, the flagellar segments 
oval with conspicuous verticils. Vertex and occiput dark 
brownish grey. 
Pronotal scutellum almost white. Mesonotal preescutum 
reddish brown without distinct markings, more greyish 
laterally ; scutum with the median area broadly obscure 
yellow, the lobes dark brown; scutellum obscure brownish 
yellow, darker basally ; postnotum dark brown. Pleura 
dark brown. Halteres vellow, the knobs very conspicuous, 
