THE CANADIAN ENTOMOLOGIST • 23 
tion of /?4+5; basal deflection of Cwi at the fork of M"; cell /^/ Ma 
closed. 
Abdomen black, the basal segments indistinctly reddish 
medially, the caudal margins pale; basal sternites yellowish, the 
apical segments dark brown. Male hypopygium with the fleshy 
ventral lobes bright honey-yellow, the remainder of the hypopygium 
black, in great contrast with these lobes. 
Habitat. — ^Colorado. 
Ilolotype, cf, Bear Creek, Morrison Co., Colorado; October 
20, 1915 (Oslar). 
Allotype, 9 , with the type. 
Paratopotypes, 20 d^ 9 . 
Tribe Antochini. 
Genus An toe ha Osten Sacken. 
Antocha monticola, sp. n. 
Antennae brown; head grayish yellow; thoracic dorsum with- 
out stripes. 
Male. — -Length 5.5 mm.; wing 7.1 mm. 
Female. — -Length 5-6.4 mm.; wing 7-8 mm. 
Rostrum and palpi dark brown. Antennae dark brown with a 
coarse, white pubescence; flagellar segments rather small, the two 
or three apical segments longer than those segments immediately 
Ijefore them. Head grayish yellow, with an indistinct, narrow, 
dark brown median line. 
Pronotum dark brown. Mesonotum light brownish yellow 
without distinct stripes; median area of the praescutum behind 
more grayish pruinose; scutum light yellow, the median area 
grayish pruinose; scutellum yellowish white; postnotum brown. 
Pleura pale grayish yellow. Halteres short, pale yellow, the knobs 
brown. Legs with the coxae pale yellow; femora yellow, a little 
darkened apically; tibise brownish yellow, slightly darker at the 
extreme tips; tarsi dark brown. Wings whitish opalescent; stigma 
elongate, indistinct, yellowish; veins pale brown. Venation: 
cross-vein r present; cell 1st Mi small; basal deflection of Cui 
before the fork of M. 
Abdomen brownish yellow above, the apical segments darker; 
hypopygium orange. 
Habitat.— -Colorado. 
