THE CANAUIA.N ENTOMOLOGIST. 65 



elongate second joint ; proboscis blackish, labella large, brownish ; palpi 

 rufous black bristly, rather stout ; occiput silvery-gray, hairy. Thorax 

 blackish, faintly silvery-pollinose, with five narrow black vittae, the outer 

 pair obsolete in front ; scutellum brownish-rufous, as is also the thorax 

 on hind margin and sides posteriorly. Abdomen dark rufous, a median 

 broad vitta and posterior margins of segments black. Legs black, tibiae 

 rufous, femora silvery on outside, especially front ones ; claws and 

 pulvilli somewhat elongate, the pulvilli tawny-whitish. Wings grayish- 

 hyaline, yellowish-brown at base ; hind cross-vein strongly sinuate ; 

 tegulae brownish-fuscous, halteres tawny-brownish. 



Length of body, nearly lo mm.; of wing, 93^ mm. 



Described from one specimen; New Hampshire (C. W. Johnson). 



This species differs from B. adusta principally in the rufous basal 

 joints of antenna, the rufous tibiae, and the brownish wing bases and 

 tegulag. Seven specimens from N.Y. (Comstock) are perhaps this species. 

 They are 10-13^^ mm.; the antennae are black, inclining to rufous at 

 base ; the frontal vitla dark brown ; the cheeks, sides of face and front 

 much less bristly. The females have two orbital bristles, and the males 

 have the claws well elongated. 



Gonia sagax, n. sp., $ . 



Eyes brown ; front almost one-half width of head ; sides of face, 

 cheeks and whole front, including frontal vitta, light golden-yellow ; facial 

 depression silvery-white and about two-fifths width of face ; vibrissae 

 decussate, inserted a little above oral margin ; sides of face, cheeks and 

 front covered with bristly hairs ; antennae nearly as long as face, second 

 joint rather short, third about five times as long as second, first two joints 

 same pale yellow as front, third joint clear orange rufous ; arista brown, 

 second joint distinctly longer than last joint ; proboscis black, tip and 

 base brownish ; palpi yellow, curved and thickened at tip ; occiput 

 blackish, except vertical area yellow, thickly clothed with yellowish-gray 

 hair. Thorax shining metallic black, posterior corners and margin and 

 scutellum testaceous, scutellum with four pairs of macrochaetae besides a 

 discal pair. Abdomen shining black, bases of segments two to four 

 silvery-white, or slightly golden in some lights, most broadly on anal 

 segment ; first and second segments with a lateral macrochajta and c^, 

 median marginal pair, third with eight or more marginal, anal with 

 several macrochaetae. Legs black, foot-claws and pulvilli nearly as loi^g 



