Pomona College, Claremont, California 57 



tennae 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 tibia? 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 tibiae red 

 with a broad black band on outer side, and an apical cream-colored 

 spot in front; the hind knees creamy-white; tegulae ferruginous; 

 wings reaching about to end of fourth abciominal 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 A^. crotchii Cress., the male of which is not known, 

 but the male of A^. 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. N. 

 margiuella Ckll., Is allied to N. erythrospila, but the antennae are 

 quite different. 



Nomada odontocera sp. n. 

 $ 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 cientate; clypeus (except nar- 

 row upper margin) and lateral marks yellow, the latter extending 



