574 PROCEEDINGS OF THE ACADEMY OF [Aug., 



head broad, facial quadrangle considerably narrowed below; front and 

 cheeks marked with black as in A^. atrofrontata, except that the red 

 orbital margin is not narrowed quite to a line at top of eyes, there is a 

 dull red spot before anterior ocellus, and a black line runs down from 

 each antenna to middle of side of clypeus; antennae entirely red (in- 

 cluding second joint), third joint conspicuovsly longer' than fourth; meso- 

 thorax with three black stripes, the middle one much the broadest; 

 scutellum prominent, it and the postscutellum red ; metathorax black 

 with a large red spot on each side ; prothorax black or blackish except 

 upper border and tubercles ; pleura red ; legs red, only the coxse marked 

 with black; basal joint of hind tarsi broad, the short hair on the inner 

 side shining pale golden; wings moderately smoky, nervures fuscous; 

 stigma quite small, ferruginous; second submarginal cell rather 

 strongly contracted above, receiving the recurrent nervure far beyond 

 its middle; third submarginal cell very narrow, of the same breadth 

 above as the second ; basal nervure ending a moderate distance basad 

 of transverso-medial ; abdomen impunctate but minutely roughened, 

 very broad, red, with a blackish stain on middle of second segment; 

 no yellow spots; first segment with lateral cuneiform black marks, the 

 points directed latero-posteriorly, and two smaller oblique marks in 

 the dorsal region between them, all being near the base of the segment. 



Hab. — "So. Cal.," one in Coll. Acad. Nat. Sciences Phila. Some- 

 thing like N. clarkii, but a very distinct species, not quite falling in 

 Nomada s. str., as defined by Robertson. 

 Nomada angelarum, sp. n. 



9 . — Length about 8^ mm., dark red with black markings, abdomen 

 chestnut-red with a purplish luster, hind margins of segments broadly 

 coppery-red. Hair of scutellum, mesothorax and vertex fuscous; of 

 sides of metathorax, hind coxae, pleura, cheeks and face rather abun- 

 dant, white; eyes gray; face a little narrowed below; upper part of 

 clypeus, supraclypeal region, front, vertex, occiput and cheeks black, 

 except that the orbital margins are broadly red, the red sending a 

 pointed projection into the black on vertex; antennae long, red, first 

 three joints more or less black l^ehind ; scape with dark hairs; face with 

 some dark hairs amongst the white; third antenna! joint conspicuously 

 shorter than fourth ; thorax densely rugoso-punctate ; mesothorax with 

 three black bands of nearly equal breadth; metathorax black, with 

 an extremely obscure reddish spot on each side, and a pair of well- 

 defined large round red spots on the enclosure; nearh^ all of pleura and 

 tubercles red, but sides of thorax otherwise black; legs red; coxae 

 largely black; middle femora black beneath at extreme base; hind 



