572 PROCEEDINGS OF THE ACADEMY OF [Aug., 



Nomada ultimella, sp. u. 



9 . — Length about 6^ mm. ; another red species similar to N. ery- 

 thrcea, but distinguished by the characters given in the table. It is 

 also near to A^. ultima, Ckll., but easily separated by its smaller size, 

 lighter color, with less black marking, and less prominent scutellum. 

 Lower corners of face yellow; ocelli on a black patch; thorax without 

 distinct bands, but the mesothorax and metathorax have barely indi- 

 cated blackish median bands; sides of first abdominal segment with 

 faint blackish stripes ; second and third segments with small lateral yel- 

 low spots ; stigma orange-fulvous ; second and third submarginal cells 

 both very greatly narrowed above ; basal nervure ending a little basad 

 of transverso-medial ; third antennal joint a little shorter than fourth. 



Hah. — "So. Cal./' one in Coll. Acad. Nat. Sciences Phila. 

 Nomada latifrons, sp. n. 



9. — Length about 9 mm.; a red species similar to iV. erythrcea. 

 Head transversely oval, face very broad, especially above; ocelli on a 

 black patch which extends considerably laterad of them; a similar 

 transverse black patch on front, joining ocellar patch by two bands; 

 cheeks black except the broadly red orbital margin; mesothorax and 

 metathorax each with a single black band ; abdomen with a blackish 

 dorsal suffusion on segment 3, and a slight stain on 4 and 5, but no other 

 black, nor any 3^ellow spots; legs red, coxse largely black behind; hind 

 femora with about half the posterior surface black; third antennal 

 joint a little shorter than fourth; wings strongly yellowish-smoky; 

 stigma dark ferruginous; third submarginal cell greatly narrowed 

 above; basal nervure ending a short distance basad of transverso- 

 medial; abdomen of the long and comparatively narrow type. 



Ha5.— Santa Cruz Mts., Cal.; two in U. S. Nat. Museum. Differs 

 from N. erythrochroa , Ckll. by the black markings, the finely roughened 

 (not distinctly punctured) abdomen, and the much broader face; from 

 N. corvallisensis, Ckll., by the A-ery much broader face and much less 

 coarsely sculptured mesothorax; from A^. ckirkii, Ckll., by its shorter 

 head in proportion to its breadth, much narrower abdomen and 

 different venation. 

 Nomada tintinnabulum, sp. n. 



9 .—Length about 6^ mm.; a red species similar to iV. erythrcco. 

 Eyes pale gray; facial quadrangle a little longer than broad; extreme 

 lower corners of face yellowish; face red entirely without marks; a 

 rather prominent keel between antennae; ocelli on a small black patch; 

 cheeks all red; antennae entirely red, third joint a trifle shorter than 

 fourth; dorsum of thorax without hair; mesothorax and metathorax 



