art. 4, REVISION OF THE FAMILY THEREVIDAE—COLE. 55 
margin of the scutellum. Scutellum white pollinose and pilose. 
Pleura and coxae dense gray-white pollinose, with white pile, very 
long and thick before the halteres. Halteres blackish, the knob very 
large, somewhat paler on the sides, and faintly gray pollinose. 
Abdomen black, densely silvery white pollinose and white pilose. 
Genitalia large and mostly shining black, the epiproct much longer 
than the hypandrium (fig. 96), sometimes reddish at the tip, with 
thick black pile, longer below. Femora black, with erect and also 
reclinate silvery white pile; basal half of tibiae and extreme base of 
tarsi yellowish brown, apical half of tibiae and most of tarsi blackish; 
fore tibiae with very little yellowish at the base; four front femora 
without bristles. Wings hyaline, the veins strong and black; stigma 
brown; cell M-3 closed near margin of wing. (Wig. 73.) 
Female.—Much as in the male. Length 8.5 to 9.6mm. About 
two-thirds of the frons shining black, more or less striated, the lower 
third silvery white pollinose (fig. 46); a few minute black hairs on 
the shining portion. First two antennal joints and base of third gray 
pollinose. 
Thoracic vittae wider than in male, very conspicuous, fading into 
gray in front and before the scutellum; the white pile of thorax and 
scutellum less dense and confined to margins of mesonotum; the larger 
part short erect blackish brown pilose. Knobs of halteres appear 
white due to the covering of pollen; there is some yellowish color on 
the sides and gray beneath. 
Abdomen largely shining black; sides of first and wide posterior 
margins of second, third, fifth, except a posterior triangle, and sides 
of sixth silvery white pollinose; seventh and eighth segments shin- 
ing black. Pile at base of abdomen white, long at sides of first. seg- 
ment, beyond the fourth segment erect and black; venter mostly 
silvery white, darker toward the tip, the last two segments shining. 
Circlet of blunt spines on genitalia brown. Legs and wings as in the 
male. 
Kroéber was of the opinion that melanoprocta Loew was the male 
of munda Loew, and this has been proven beyond doubt in looking 
over several collections. The species has been reported from Pullman 
and Coupeville, Washington; Colorado; Wisconsin; Maine; New York; 
Montreal and Hudson Bay Territory, Canada. 
Type locality. Wisconsin (Kennicott). 
Type.—In the Museum of Comparative Zoology at Cambridge, 
Massachusetts. 
Distribution.—The distribution according to 35 males and 30 fe- 
males is: 
Canada: Montreal, Quebec, June [Kans. U.]; Ottawa, Ontario, 
August 29 (Beaulieu); Ottawa, May 25; Ottawa, August 26 (C. B. 
Hutchings); Sudbury, Ontario, June 22 to August 10; Cowley, Al- 
