1910] Cockerell — Bees of the Genus Nomada 95 
wholly black except the reddish tubercles; tegule very bright fer- 
ruginous; wings strongly dusky at apex; stigma ferruginous, nervures 
fusco-ferruginous; b. n. going far basad of t. m.; first r. n. joining 
second s. m. well beyond middle; legs red, the anterior femora black 
at base behind, the other femora with more black, the hind ones with 
more black than red; abdomen clear red, first segment with basal half 
and a pair of spots on apical half black; second segment with a pair 
of very large pale yellow patches, pointed mesad; sixth with a pair of 
obscure yellowish spots; apical plate notched; venter red with broad 
suffused blackish bands. A western representative of NV. perplexa 
Cresson, easily distinguished by the much lighter red abdomen. 
Hab.— Pullman, Washington State, June 7, 1908 (W. M. Mann). 
Nomada itamera sp. nov. 
2. Length 814 mm.; head and thorax coarsely rugosopunctate, with scanty 
white (yellowish dorsally) hair; black, with the following parts dark 
red, face below antennez except a broad black band extending from 
each antenna to clypeal margin, mandibles (which are stout and 
blunt, but entire) entirely, labrum, posterior orbits extremely nar- 
rowly, a large triangular mark above each eye, a large V-shaped 
mark on each side of mesothorax, the greater part of the extremely 
prominent and strongly bilobed scutellum, upper border of prothorax, 
tubercles, and a very large patch on pleura; antenne thick, third joint 
shorter than fourth, scape red in front, flagellum dark red suffused 
with dusky; tegule very bright ferruginous, strongly punctured; 
wings very dark on apical margin, stigma and nervures dark red- 
dish; b. n. going a moderate distance basad of t. m.; second s. m. 
large, receiving first r. n. at middle; legs red, the femora with much 
black, the edges of the black suffused; abdomen broad, dark red, black 
at base of first segment trilobed, apical margin of first two segments 
strongly blackened; apical half of abdomen darker, with minute scat- 
tered glittering hairs; sides of second segment with a round suffused 
yellow spot; fourth segment with a pair of subdorsal yellow spots. 
Hab.— Pullman, Washington State, May 30 (W. M. Mann). 
There is no sign of yellow at lower corners of face. A probable 
male of this species is from Wawawai, May 15. 
Nomada orcusella sp. nov. 
2. Length 814 mm.; bright ferruginous; head and thorax rugosopunctate; 
eyes reddish-grey; a keel between antenne; the following parts are 
black, a large patch on front, including antennal sockets, a small area 
about ocelli; cheeks posteriorly, a median stripe on mesothorax, a 
