570 PROCEEDINGS OF THE ACADEMY OF [Aug., 



Nomada rubrica, Provancher, var. a. 



■ 9 . — A black stripe connecting the ocelli ; hind femora with a black 

 stripe behind. Wings strongly yellowish-smoky, basal nervure meet- 

 ing transverso-medial, but rather on the basad side. Third antennal 

 joint shorter than fourth. From N. grayi, CklL, it is easily known by 

 the venation, and absence of black on the cheeks. 



Hab. — Los Angeles county, Cal. (Coquillett). In U. S. Nat. Museum. 



Nomada subangusta, sp. n. 



d^. — Length about 8 mm.; black, ferruginous and yellow; head and 

 thorax with rather copious hair, dull brownish above, white below. 

 Basal two-thirds of mandibles, labrum, clypeus, and lower corners of 

 face, sending a line ending very sharply about half-way up orbital 

 margin, all yellow; a narrow yellow stripe on lower third of posterior 

 orbits; scape yellow (suffused with red basally) in front and sides, 

 black behind; flagellum orange-ferruginous, more or less blackened 

 above, especially the basal half; third antennal joint conspicuously 

 shorter than fourth; thorax densely punctured, black, tubercles pallid, 

 but no other joale markings; tegulse ferruginous, hairy and punctured; 

 legs ferruginous ; anterior femora suffused with yellowish in front, and 

 with a black stripe behind; middle femora black beneath except at 

 apex; hind femora black behind and beneath except at apex, but the 

 margins of the black suffused ; anterior and middle tihise with a suffused 

 blackish spot; wings clear, dusky on apical margin, nervures fuscous, 

 stigma ferruginous ; second submarginal cell narrow, higher than long ; 

 basal nervure ending just basad of transverso-medial; abdomen with 

 the basal half of first segment, and the bases of following segments 

 more or less (but edged with ferruginous) black ; apical margins of the 

 segments very broadly ferruginous; bands pale yellow, that on first 

 segment abruptly interrupted ; that on second gradually narrowed to 

 middle but not quite interrupted ; apical plate rather long and narrow, 

 deeply notched; shape of first segment long and narrow; venter ferru- 

 ginous variegated with pale yellow. 



Hah. — "So. Cal.," one from the W. J. Fox collection (U. S. Nat. 

 Museum). Close to A^. modocorum, CklL, with which it nearly agrees 

 in markings, color and pubescence; but it is a much narrower insect, 

 especially in the first abdominal segment, than modocorum. It differs 

 in the same manner from N. rw/icorms, L., which.it also much resembles. 

 By the narrow first abdominal segment, and other characters, it resem- 

 bles N. cordleyi, CklL, but the latter has a much longer flagellum, and 

 the abdomen is narrower in the middle. 



