358 NEW YORK 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 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. 



^Coquillett 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. s. 1898. p.G9. Mass., Cal., N. Y.^ 

 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 graj 

 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. " Harrinian Exp." 1900. p.393. 



