1 68 KANSAS UNIVERSITY QUARTERLY. 



Another male (PI. VI, f. ii), California, is but 3.5 mm. long. 

 The light dots on the wings are large, the posterior cross vein is con- 

 siderably bent and the abdomen is uniformly blackish. 



Eutreta diana (). S. 



A male bred from Artemcsia sp. by Prof. F. H. Hillman, Reno, 

 Nevada, June 20, is nearly related to this beautiful species. A com- 

 parison with Osten Sacken's description shows the following differ- 

 ences: — Length, 4 mm. ; front opaque yellow, and not reddish as in 

 diana; face white, while from the description it is presumably black 

 with white pollen; abdomen blood red e.\cept fifth segment and 

 hypopygium and two anterior bars, not reaching the sides, on third 

 and fourth segments, which are black. In diatia the black is confined 

 to the last two segments, with a narrow posterior border of red on the 

 penultimate segment. The posterior cross vein is perpendicular and 

 strongly curved, and the drops, while small, are very white and 

 distinct. In diana the posterior cross vein is oblique and only gently 

 curved and the drops are faint. 



A female from Montana differs from the male in the lighter color 

 of the legs; the abdomen is entirely red and the o\ipositor reddish- 

 black. 



With only the description for comparison it may be premature to 

 assign these specimens to a new species. They may be called, how- 

 ever, variety fricolor. 



Eutreta longicornis n. sp. (Pi. VI. f. 12.) 



Kasily distinguished by its very long third antennal joint and small 

 size. 



Male. Shining black, with sparse whitish pubescence. Front 

 opaque brownish-yellow, a little shining before the antennae, bristles 

 blackish, those of posterior orbit white and thick. Antennae very 

 long, reaching the oral margin, black with fine whitish pubescence; 

 third joint twice as long as the other two together. Face brown, 

 shining, somewhat e.xcavated; cheeks with yellow pile. Palpi small, 

 almost concealed, apparently blackish at tip. Occiput black, rather 

 swollen. Legs brown, tarsi yellowish. Wings with the characteristic 

 picture. Small cross vein oblique; posterior cross vein almost per- 

 pendicular and considerably curved; the hyaline drops of the wing 

 reach the margin only behind the tip of fifth vein. In the discal and 

 third posterior cells and anal region, the drops enlarge and are more 

 or less confluent. The second basal and anal cells are nearly hyaline. 



Length, 3.5 mm. 



One specimen, Montana (Morrison). 



