358 NEW lOEK STATE 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 femwa, 

 base of tibiae, and the greater part of metatarsi light yellow; 

 wings pure hyaline, the veins light colored, thoise posteriorly 

 very delicate. Length 2.5mm. 



One specimen, Argus mountains, Cal. May 1891. 



^Ooquillett makes this a synonym of v i 1 1 a t u m 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. Bui. 10, n. «. 1898. p.e9. Mass., CaL, N. Y., 

 Kan., Mieti. 



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, Oal. 

 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- 



iWash. Acad. Sci. " Harriman Exp." 1900. p.39S. 



