298 Dr. C. P. Alexander on 
Mate.—Length 3°3-3°6 mm.; wing 45-5 mm. 
Rostrum and palpi pale brown. Antenne of the male 
about one-fourth longer than the body, pale brown; flagellar 
segments elongate-fusiform, with abundant, delicate, erect 
sete. Head dark. 
Pronotum pale testaceous, the scutellum obscure yellow. 
Mesonotum uniformly brown, the surface shiny with few 
conspicuous sete. Pleura pale yellowish testaceous. 
Halteres very long and slender, pale brown. Legs with 
coxe brownish testaceous; remainder of the legs pale 
brownish testaceous, the terminal tarsal segments a little 
darker. - Wings whitish subhyaline, the macrotrichiz long 
but very delicate, pale brown; veins almost white; the 
fringe of macrotrichiz along the posterior and anal margins 
very elongate. Venation: Se short, ending just before the 
fork of Rs; petiole of cell R, very long, from one-third to 
nearly one-half Rs ; 7 short, on Ry,3 a short distance beyond 
the fork of Rs; basal deflection of Cu, on M3,,4 from one- 
third to two-thirds its length beyond the fork. 
Abdomen brown. Male hypopygium with the basal 
pleural appendage appearing as a slender chitinized arm, 
deeply split near mid-length, the two arms but feebly diver- 
gent, one arm, immediately before the tip, bearing a dense 
brush of tawny hairs ; apical spine blackened ; apical ap- 
pendage small, black, slightly curved, the apex feebly 
notched. Penis-guard very long and slender, straight. 
Hab. New Zeaiand (North Island). 
Holotype, &, Ohakune, altitude 2060 feet, September 14, 
1921 (7. R. Harris). 
Paratopolype, 1 8, with the type; 1 ¢, October 15, 
1921. 
Molophilus tanypus, sp. u. 
General coloration pale brown ; antenne short ; legs very 
long and slender; wings whitish subhyaline, variegated with 
patches of dark macrotrichiz ; basal deflection of Cu, beyond 
the fork of M; abdomen pale brown, with dark brown 
lateral spots; male hypopygium with the mesal face of 
pleurite at apex bearing dense brushes of dark hairs. 
Male.—Length 3-3°3 mm. ; wing 5-5°5 mm. 
Rostrum and palpi pale brownish testaceous. Antenne 
short, pale brown, the scapal segments a little paler; flagellar 
segments cylindrical. Head dark, sparsely pruinose. 
Mesonotal preescutum pale brownish testaceous, fading 
into yellowish laterally ; posterior sclerites darker brown. 
Pleura yellowish testaceous, the dorsal sclerites infuscated. 
