10 THE CANADIAN ENTOMOLOGlSt. 



Epacmus concimius, n. sp. — Head black, front densely white polHnose, 

 destitute of tomentum, the middle portion sparse white pilose, the orbits 

 and space in centre of lower third of front bare; face much retreating 

 below, densely white pollinose, destitute of tomentum, the lower three- 

 fourths densely white pilose. Proboscis not projecting beyond the oral 

 margin. Antennae having the first two joints yellow, the third black and 

 nearly twice as long as the first two united ; styliform portion of the third 

 joint one-half as long as the thickened basal part. Occiput yellowish 

 tomentose. Thorax black, the anterior third white tomentose, the re- 

 mainder yellowish tomentose ; pile of thorax sparse and mostly yellowish, 

 the bristles also yellowish ; pleura dense white tomentose and sparse 

 yellowish pilose. Scutellum opaque black, rounded behind, white and 

 yellowish tomentose, the bristles yellowish. Abdomen reddish-yellow, its 

 tomentum and pile golden-yellow except a wide crossband of white tom- 

 entum on the second segment ; venter yellow, blackish at its base, 

 its pile and tomentum yellowish except that at the base, which is 

 white. Legs yellow, a black spot at base of each trochanter ; tomentum 

 and bristles of legs yellowish, hind femora each with three bristles below, 

 ront tibiae provided with bristles. Wings wholly hyaline. Stalk of 

 halteres brownish-yellow, the knob sulphur yellow. Length 7 mm. San 

 Diego county, Cal. A single female, in May. 



Epacmus pellucidus, n. sp. — Black, the femora, tibiae and base of each 

 tarsus reddish. Front densely dark brown and yellowish-white tomentose 

 and pilose, the pile very short ; face slightly produced below, white 

 tomentose and yellow pilose. Proboscis not projecting beyond the oral 

 margin. Antennae having the second joint minute and scarcely apparent j 

 styliform portion of the third joint equal in length to the thickened basal 

 part. Occiput white tomentose, that in the middle above reddish-brown. 

 Thorax reddish tomentose, the bristles white (only two in number, one in 

 front of each wing) ; pile and tomentum of the pleura, breast and coxae 

 white. Scutellum opaque, rounded behind, reddish tomentose, the pile 

 and bristles wholly wanting. Abdomen mixed reddish and yellowish 

 tomentose, that on the last two segments wholly white ; last segment pol- 

 ished blackj the pile on its apex golden, yellow ; dorsum nearly destitute 

 of pile, first segment toward its sides abundant white pilose ; venter 

 yellowish-white tomentose. Legs white tomentose, all femora and the 

 front tibiaj destitute of bristles. Wings hyaline, apex of subcostal cell 



