248 HYMENOPTERA. 



80. NoMADA Americana. B.M. 



Nomada Americana, 2^ir6y, Faun. Boreal. Amer. p. 269. 1. pi. 6. 

 f. 3?. 



Hab. North America ; Hudson's Bay. 



81. Nomada articulata. B.M. 



Male. Length 3i lines. — Black, the clypeus, labrum, mandi- 

 bles, sides of the face, scape in front and flagellum towards the 

 base yellow, the latter ferruginous towards the apex, above fus- 

 cous, the scape black above, joints of the flagellum submonili- 

 form. The tubercles, tegulse, scutellum and post-scutellum 

 ferruginous, the wings hyaline, the nervures ferruginous, the 

 apical margin of the superior wings fuscous ; legs ferruginous ; 

 the coxse and posterior femora within fusco-ferruginous ; the 

 two basal segments of the abdomen dark ferruginous, the apical 

 ones black ; a minute spot on each side of the first segment, a 

 large ovate one, pointed within, on the second, and a transverse 

 fascia on the four following placed about the middle, yellow ; the 

 apex ferruginous. 



Hab. North America. (E. Doubleday.) 



82. Nomada annulata. B.M. 



Female. Length 3^ lines. — Black, the sides of the face, orbits 

 of the eyes, clypeus, labrum and mandibles yellow ; the antennae 

 and a minute spot above the clypeus ferruginous. Thorax, the 

 collar, tubercles, a spot before and a line below them, the 

 scutellum and a patch on each side of the metathorax yellow ; 

 legs ferruginous, variegated with yellow, the wings slightly 

 clouded on their apical margins. Abdomen slightly ferruginoii'? 

 towards the base, each segment having a transverse yellow band ; 

 the three basal bands more or less attenuated in the middle, the 

 bands continued beneath the abdomen. 



Male. Length 3^ lines. — This sex has the clypeus, labrum, 

 mandibles, scape of the antennae in front and the flagellum be- 

 neath of a pale yellowish-white, the latter is fuscous above 

 towards the base and again towards the apex, the intervening 

 joints are ferruginous and the apical one entirely yellowish-white ; 

 thorax, the scutellum ferruginous; the tubercles, tegulse and 

 nervures of the wings reddish -yellow, the wings subhy aline, 

 having a fuscous cloud at their apex. Abdomen black at the 

 extreme base, the rest of the first segment and the whole of the 

 second ferruginous, the latter having a large angulated yellow 

 macula on each side, the first only a minute dot ; each segment 



