1910] Cockerell — Bees of the Genus Nomada 93 
broadly black, all the femora and tibie with large black patches be- 
hind, etc. In the table of Rocky Mountain species (Bull. 94, Colo. 
Exp. Sta.) it runs to 62, and runs out because it is a female with 
black thorax. The hair of the head and thorax above is strongly red- 
dish. The b. n. goes a considerable distance basad of t. m. 
Hab.— Spokane, Washington State, May 30 (W. M. Mann). 
Among the European species, this insect has a strong superficial 
resemblance to N. ruficornis (specimen from Buda compared). 
Nomada malonella sp. nov. 
3. Length about 7 mm.; head and thorax black, densely and very coarsely 
punctured, with white hair, which is dull and scanty above, clear white 
and more abundant below, abundant and shining on lower part of 
face; head transversely suboval, face very broad, eyes converging be- 
low; lower corners of face, extreme lower margin of clypeus and base 
of mandibles yellow; mandibles simple, apical half ferruginous with 
the apex black or almost; labrum black, pallid around the margins; 
scape stout, wholly black; third antennal joint shorter than fourth, 
but more than half its length; flagellum long, rather thick, black above, 
broadly ferruginous beneath; area of metathorax rugose; tegule 
dark ferruginous, coarsely rugosopunctate; wings moderately dusky, 
the large stigma and nervures dark ferruginous; b. n. going far 
basad of t. m.; second s. m. broad above; legs red, the femora and 
tibie largely black behind, the posterior ones almost wholly so; hind 
tarsi largely blackened; spurs white; abdomen narrow, light but 
dullish red, with fine whitish pubescence giving it a silky appearance; 
first segment with the basal half black, the other segments a little 
blackened at extreme base; extreme side of segments 2 to 5, with 
successively smaller cream-colored spots; segments 4 to 6 with also 
subdorsal spots; venter with imperfect cream-colored bands, out of 
which large pieces seem to have been cut at the sides. Allied to N. 
elegantula Ckll. and somewhat to NV. melliventris Cresson. 
Hab.— Wawawai, Washington State, May 1, 1909 (W. M. 
Mann). 
A female (date and locality the same) seems to belong here, but 
may represent another species. It is only about 644 mm. long, 
and differs from the male thus: Scape with a red spot at base; 
third antennal joint almost as long as fourth; thorax with red 
marks as follows: upper border of prothorax, tubercles, two fine 
lines on mesothorax, two spots on scutellum, axillar spots, a line on 
postscutellum, a spot beneath wings, and a transverse mark on 
