308 NEW YORK STATH MUSEUM 
dorsum thinly pollinose; not shining; pleura densely white pol- 
linose with a black spot; abdomen opaque velvety black, the first 
three segments with a narrow silvery white spot on either side. 
at the hind margin, the next three segments similarly marked, 
but the interval between the spots successively wider, and each 
with two other, successively larger, white spots, leaving a black 
space in the middle and a narrower one at the outer sides; ven- 
ter white; legs brownish black, the distal part of the femora, 
base of tibiae, and the greater part of metatarsi light yellow; 
wings pure hyaline, the veins light colored, those posteriorly 
very delicate. Length 2.5mm. 
One specimen, Argus mountains, Cal. May 1891. 
1Coquillett makes this asynonym of vittatum Zett., though 
nothing is said above of the handsomely marked thorax so con- 
Spicuous in the female of vittatum. 
S. bracteatum Coquillett 
Dep’t Agric. Div. Ent. Bul. 10, n. s. 1898. p.69. Mass., Cal., Nee 
Kan., Mich. 
Female. Dorsum of abdomen deep black, not marked with 
gray, quite densely clothed with nearly erect yellowish tomen- 
tum; mesonotum also deep black and covered with appressed 
golden yellow tomentum; pleura grayish black; legs nearly bare, 
yellow, apexes of femora and of tibiae, and whole of tarsi ex- 
cept the basal five sixths of the first joint of the hind ones on 
brown; first joint of front tarsi scarcely dilated, the first joint 
of the hind ones one half as wide as their tibiae; head gray, 
covered with a pale yellow tomentum; antennae black, the two 
basal joints yellow, mouth parts black; wings hyaline, costal, 
first three veins and first section of the fourth, yellow, the re- 
mainder subhyaline. Length 1.5mm. 
Cambridge Mass. (May 31, 1889) and Los Angeles county, Cal. 
Two females, the one from California captured by the writer. 
Male. Mesonotum wholly velvet black; abdomen with a gray 
spot on the sides of the second, fifth, sixth and seventh seg- 
ments; legs almost wholly brown, otherwise as in the female. 
Two male specimens taken with the female. 
Some female specimens believed to be this species received 
from Professor Aldrich, and a single specimen caught on a win- 
dow in Ithaca, Oct. 16, by the writer agree perfectly with Mr 
Coquillett’s description excepting that the abdomen of these 
1Wash. Acad. Sci. ‘Harriman Exp.’ 1900. p.393. 
