164 Journal New York Entomological Society. [Voi. vi. 
gray and not dense, none on the second antennal joint, mesonotum sparsely covered 
with short yellow hairs, only one pair of dorso-centrals, the prothoracic bristle yellow, 
hairs of the first three segments of the abdomen in the male, of the first six in the female, 
yellow, apex of sixth segment in the female bearing six stout macrochaetae. Wings 
not tinged with brown along the veins. Hind tibia each bearing only two pairs of 
macrochaetae on the outer side. Length, 6 to 7 mm. 
Colorado, and Reno, Nevada (H. F. Wickham). One male and 
two females. Type No. 5002. 
Cordylura nebulosa, sp. nov. 
Black, the front except the sides and the ocellar triangle, dark brownish yellow, 
sides of front, face, cheeks, lower part of occiput and the palpi, white, first-two anten¬ 
nal joints, proboscis, halteres, coxa, femora, tibia and tarsi yellow; third antennal 
joint one and one-third times as long as wide, arista short pubescent, vibrissa shoit, 
yellow, a yellow bristle of nearly the same length below each. Mesonotum and scutel- 
lum opaque gray pruinose, five dorso-central macrochata, scutellum bearing four stout 
ones; pleura on the lower part gray pruinose, the upper part and the abdomen 
polished, the latter destitute of stout macrochata, its hairs yellow. All femora and 
tibia bearing stout macrochata, hind tibia each with three on the outer side besides 
those at the tip. Wings hyaline, the costal cell beyond the humeral crossvein, a bor¬ 
der to the first vein beyond base of the second, and a large spot extending from apex 
of first vein to slightly beyond the apex of the fourth, brown, sometimes a hyaline 
vitta in the marginal cell, a triangular hyaline spot near apex of the submarginal and 
first posterior cells; small crossvein near last third of the discal cell. Length, 5 mm. 
Algonquin, Ill. Two female specimens collected June 2 and 6, 
1895, by Dr. W. A. Nason. Type No. 4099. 
Cordylura slossonae, sp. nov. 
Black, the lower half of the front, antennae, face, cheeks, lower part of occiput, 
palpi, proboscis, under side of the prothorax, halteres, apical lamellae of the genitalia, 
coxae, except a spot on the outer sides of the middle and hind ones, femora except 
apices of the middle and hind ones, tibiae and tarsi, yellow. Thiid antennal joint 
one or two-thirds times as long as wide, arista long plumose on the basal half, 
thickened on the basal sixth, lateral oral margin ciliate with yellow bristly hairs. 
Mesonotum, scutellum and abdomen polished, sparsely covered with yellow hairs, one 
pair of dorso-central and scutellar macrochaetae, abdomen destitute of stout macro¬ 
chaetae except at apex of the sixth segment; pleura gray pruinose, one sterno- 
pleural macrochaetae, those of the protlmrax and mesopleura slender and yellow. 
Front and hind femora destitute of stout macrochaetae, those of the front tibiae slender 
and yellow, under sides of femora and inner sides of tibiae thickly covered with long 
yellow hairs. Wings hyaline, small crossvein near last third of the discal cell. 
Length, 7 mm. 
Mt. Washington (Mrs. A. T. Slosson) and White Mountains (H. K. 
Morrison), N. H., and Beverly, Mass. (Edw. Burgess). Four male 
specimens. Type No. 5000. 
