Robertson — North American Bees. 341 



process. The band on first segment is often indented pos- 

 teriorly. 



NOMADA INTEGERRIMA D. T. 



Nomada Integra Robertson, Trans. Am. Ent. Soc. XX, 276, <??, 1893 



(uec Brulle). 

 Nomada integerrima Dalla Torre, Cat. Hym. X, 353, 1896. 



Nomada viburni g. 



Black, thinly clothed with whitish pubescence ; face below 

 antennae, except two black spots in suture on each side of 

 olypeus above, mandibles except tips, scape in front, narrow 

 anterior orbits to summit of eye, posterior orbits two-thirds 

 to the summit, yellow ; flagellum fulvo-ferruginous and with 

 the scape blackish above; mandibles simple; a large spot on 

 pleura extending upwards to tubercles and sometimes back- 

 wards, tubercles, tegulae, line on collar, two spots on scu- 

 tellum, sometimes united, line on postscutellum, and a spot 

 on each side of metathorax below, yellow; coxae yellow in 

 front, black behind; front legs yellow in front, ferruginous 

 behind, the tibiae with a black spot; middle legs similar; 

 hind legs ferruginous, the femora blackish behind ; wings 

 hyaline, apical margins slightly clouded, nervures and stigma 

 honey yellow ; abdomen black at base, first segment with a 

 fulvo-ferruginous band containing a small yellow spot on each 

 extreme side, 2-5 brownish with broad yellow bands, nar- 

 rowed on the disc, apical segment emarginate, abdomen 

 beneath with four broad yellow bands, the last segment with 

 a yellow spot. Length 8-9 mm. 



Carlinville, Illinois; 2 $ specimens. 



In both specimens the first transverse cubital nervure is 

 wanting. 



Nomada erigeronis §. 



Black, very closely and coarsely punctured; pubescence 

 thin except a line about tubercles and on collar and sides 

 of metathorax; head below antennae, except mandibles at 

 tips, wide anterior and narrow posterior orbits, nearly meet- 

 ing on vertex, antennae, except flagellum above, legs, except 

 posterior femora and tibiae behind, irregular patch on pleura, 



