]54 KANSAS UNIVERSITY SCIENCE BULLETIN. 



nose, pile white, and with a row of black bristles on each side 

 above. Mesonotum brown pollinose, with a median gray vitta, 

 humeri reddish, region above humeri, lateral margins to just 

 behind suture, and the borders of the median, golden yellow 

 pollinose, hind part of mesonotum largely gray pollinose, two 

 presutural, two supraalar and two postalar bristles present, 

 two rows of bristly hairs replace the dorsocentrals on mesono- 

 tum ; scutellum gray pollinose, bristles black, pile white; 

 pleurse grayish yellow pollinose anteriorly, gray posteriorly, pile 

 white and black, mesopleur^e without bristles on upper part; 

 halteres lemon yellow. Abdomen black, lateral and hind mar- 

 gins narrowly gray pollinose, and fringed with white pile, pile 

 of darker portion of dorsum black, venter gray, with white pile. 

 Coxae gray pollinose, pile white, middle pair with a single black 

 bristle, legs reddish yellow, pile white, a spot on under side of 

 femora, knees, tips of tibic^, tarsi and all bristles black. Wings 

 hyaline, first submarginal cell with a slender gray streak. 

 Length, 15 mm. 



One specimen ; June. 



Promachus negligens, n. sp. 



Male and female: Very similar to P. y?ai;i6ar6i,9 but is larger, 

 and the general color of the pollen, except on the face, is gray ; 

 the antennae are wholly black, the face is furnished with some 

 black bristles ; palpi of female with black and whitish bristles, 

 of male yellowish white ; occiput of female without black bris- 

 tles above. Mesonotum reddish in ground color on shoulders 

 and margins ; scutellum with black bristles, pile white ; meso- 

 pleura? without bristles on upper part in the male, in the fe- 

 male with three strong and two weak black ones. Pile of black 

 spots of abdomen black, three black bristles among pile on 

 sides of first segment of male ; hypopygium with a tuft of white 

 pile above. Middle coxae with several whitish bristles, hind 

 coxae and all legs with black bristles, pile white, of the male 

 the anterior surface of the four front femora, apex of hind 

 femora, tip of tibije, and tarsi wholly black, legs of female 

 dull red, tips of femora, tibiae and tarsi wholly black. Wings 

 hyaline, first submarginal cell of female with a faint streak of 

 gray. Length : Male, 26 mm. ; female, 31 mm. 



Three specimens ; November and February. 



