12 PROCEEDINGS OF THE ISTATIOlSrAL. MUSEUM. tol. 64 



on the median line, the dorsal apical portion produced dorsad and 

 proximad mto very stout cylindrical lobes, the apices of which are 

 contiguous at the median line, the bases widely separated; the slender, 

 shiny pleural appendage is almost straight, broad-based, the extreme 

 tip curved, these appendages decussate across the median line. 

 Ninth tergite almost straight across or the margin even feebly con- 

 cave. Ovipositor black basally, the long valves reddish horn color. 



In the holotype, the left wing has cell 1st M^ open by the atrophy 

 of the outer deflection of Jfg. 



Described from two males and two females: one specimen of each 

 sex (type and allotype) from Longmire Springs, Mount Rainier, 

 Washington, June, 1917 (H. G. Dyar) ; the other pair from Prospect, 

 Oregon, May 23-29, 1921 (H. G. Dyar). 



Type.— Male, Cat. No. 26090, U.S.N.M. 



UMNOPHILA RUBroA, new species. 



General coloration shiny reddish ; legs yellow, the tips of the femora 

 conspicuously blackened; bases and apices of the tibiae narrowly 

 blackened; wings brownish fulvous, stigma pale; Rs long, angulated 

 at origin; r at tip of R^ 



Male. — Length about 9 mm.; wing 9.3 mm. 



Rostrum and palpi brown. Antennae with elongate basal segment 

 of the scape bro^\^lish black; second segment black; flagellar segments 

 dark bro\vn. Head dark brown, paler behind. 



Mesonotal praescutum shiny reddish orange with a narrow black 

 median vitta that occupies the anterior half of the sclerite; remainder 

 of the mesonotum reddish yellow, the postnotum indistinctly and 

 narrowly darkened medially. Coloration of the pleura obscured by 

 glue. Halteres broken. Legs with the coxae and trochanters red- 

 dish orange; femora obscure yellow, the tips rather broadly and 

 conspicuously black, the amount equal on all the legs; tibiae brown- 

 ish yellow, narrowly blackened both at base and apex; tarsi dark 

 brown. Wings with a strong brownish fulvous tinge; stigma small, 

 barely indicated; veins pale brown. Venation: Sc long, Sc^ extend- 

 ing to just beyond the origin of R 2+$; Sc^ at tip of Sc^ ; Rs elongate, 

 longer than R^ alone, angulated at origin; R2+3 equal to the basal 

 deflection of Cu^ ; r at tip of i^^ ; cell M^ about as long as its petiole; 

 basal deflection of Cu^ before one-third the length of cell 1st Mj. 



Abdomen conspicuously reddish, unmarked. Male hypopygium 

 with the mesal apical angle of the pleurite produced into short blunt 

 lobes; pleural appendage very long and slender, broad-based, taper- 

 ing rapidly to the slender apex, the margins smooth. 



Described from a single male, collected at Prospect, Oregon, 

 May 23, 1921 (H. G. Dyar). 



