Pomona College, Claremont, California 57 
tenne very long, third joint about half length of fourth; scape 
black; flagellum fulvous beneath, suffusedly blackened above; tuber- 
cles yellow, two minute yellow dots at anterior corners of scutel- 
lum, and two yellow spots on postscutellum, all these markings in- 
conspicuous; legs black and ferruginous, some of the markings 
characteristic; the anterior tibie red with a black stripe on outer 
side, at the end of which is a cream-colored spot; the middle femora 
red in front, with a large black basal patch; the middle tibie red 
with a broad black band on outer side, and an apical cream-colored 
spot in front; the hind knees creamy-white; tegule ferruginous; 
wings reaching about to end of fourth abdominal segment, dilute 
brownish with a large clear patch in the subapical field; stigma 
dark, dusky red; b. n. going a little basad of t. m.; abdomen long 
and narrow, dull ferruginous, the segments with broad dark basal 
bands; segments 1 to 4 with large (largest on second) lateral 
creamy-white patches, the first two short and broad, the other two 
transversely elongate, each having upon it a clear red spot; fifth 
segment with the pale patches almost joined in middle, sixth with 
a broad pale band covering nearly all the surface; apical plate 
deeply notched; venter ferruginous with whitish and dusky mark- 
ings. 
Habitat: Claremont, California (Baker; Pomona coll. 172). 
A distinct little species of Nomada s. str. The abdominal mark- 
ings suggest N. crotchii Cress., the male of which is not known, 
but the male of N. crotchii nigrior differs from erythrospila so much 
in form and face-markings, that we can hardly refer the latter to 
crotchii. In N. crotchii the first r. n. joins the second s. m. far 
beyond the middle, but in erythrospila it joins it at the middle. JN. 
marginella Ckll., is allied to N. erythrospila, but the antenne are 
quite different. 
Nomada odontocera sp. n. 
6 Length a little over 7 mm.; rather robust, head and thorax 
black, densely rugosopunctate, but the large punctures of the meso- 
thorax glistening; hair of head and thorax above pale fox-red, 
beneath dull white; head transversely oval; mandibles simple, yel- 
low, red at apex; labrum yellow, not dentate; clypeus (except nar- 
row upper margin) and lateral marks yellow, the latter extending 
