58 PROCEEDINGS OF THE NATIONAL MUSEUM, VOL. 62. 
limata, black, thinly gray pollinose and with short black bristles on 
the first two joints. Lower half of frons and face silvery white pol- 
linose. Pile of palpi and proboscis white. Occiput and cheeks 
whitish pollinose, lower half of occiput white pilose, as are the cheeks, 
the upper half with numerous black bristles. 
Thorax black in ground color, gray pollinose, the dorsum with recli- 
nate white pile and erect black pile; two distinct vittae and the 
lateral margins of mesonotum whitish gray, dividing the blackish gray 
dorsum into three parts. Scutellum black, thinly gray pollinose, more 
dense on the margin, with four black bristles. Pleura and coxae 
dense silvery gray pollinose, white pilose. Stem of halteres brown, 
base of the knob black, the outer portion whitish. 
Abdomen black, shining, the first three segments white, reclinate 
pilose, longer on the sides of the first segment, beyond the third seg- 
ment short erect black pilose as usual. First segment whitish gray 
pollinose on the sides; posterior angles of the second, third, fourth, 
all of fifth, and narrow lateral spots on sixth and seventh silvery gray 
pollinose; venter on first five segments silvery gray pollinose. 
Femora and apical joints of tarsi blackish; knees, tibiae except 
apices, and base of tarsi reddish; pile of femora white; all the leg 
bristles black. Wings with brown veins and stigma, the veins more 
or less faintly bordered brownish; cell M—3 wide open. 
Type locality.—Trenton, Ontario, Canada, June 6, 1902 (Evans), 
[Canad. coll.}. 
Type.—Female, in the Canadian national collection at Ottawa. 
There is a paratype in the Canadian collection taken at Ottawa, 
Ontario, June 3, 1912, and one female paratype in the collection of 
C. W. Johnson, taken at Montfort, Quebec, July 10, 1916. The species 
is related to grandis and limata, and would run to the latter species 
in Kréber’s synoptic table. P. limata is a western species, is more 
densely pollinose, and the antennae are slightly different. 
PSILOCEPHALA LIMATA Coguillett. 
Plate 6, fig. 49; plate 7, fig. 71; plate 8, figs. 86 and 101; and plate 13, fig. 173. 
1894. Psilocephala limata Coquttuett, Journ. New York Ent. Soc., vol. 2, p. 99. 
General body color black, gray pollinose, mostly white pilose; the 
tibiae largely reddish; wings hyaline. 
Female.—Length 11 to12mm. Frons opaque brown pollinose and 
black pilose on the upper half (fig. 49), lower half and face bare and 
white pollinose; palpi brownish; pile beneath head, on cheeks, and on 
occiput white. Occiput gray pollinose, with black bristles. Anten- 
nae black, first joint gray pollinose, with black bristles, the third as 
long as the first and second combined and distinctly broader, the style 
about one-sixth as long as the third joint. 
