654 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.39. 



NOMADA (MICRONOMADA) MITCHELLI, new species. 



Female. — Length 6 to 7 mm.; black, red, and yellow; head short 

 and broad, face shining; clypeus, labrum, mandibles except tips, 

 and whole of sides of face rather light ferruginous; supraclypeal 

 area suffusedly reddish, front and vertex black; the red continues 

 broadly upward some distance above antennae, and then stops 

 abruptly, except for a narrow line (sometimes absent) along the 

 orbital margin, uniting with the narrow post orbital ferruginous 

 stripes; vertex shining, not closely punctured; antennae entirely 

 ferruginous, the flagellum a little dusky above; third joint con- 

 spicuously longer than fourth; second joint of labial palpi much less 

 than half length of first; thorax black, pleura with a large but 

 variable red patch, and inclined to be suffused with reddish above; 

 upper border of prothorax, tubercles, tegulse, the rather strongly 

 bilobed scutellum (except the posterior middle) and the postscutellum 

 chrome 3^ellow; the metathorax without light marks; pleura strongly 

 and quite densely punctured ; mesothorax shining, with well-separated 

 punctures; wings dark, strongly reddish; stigma ferruginous; h. n. 

 meeting t. m.; second s. m. broad, receiving first r. n. about middle 

 (one specimen has only two submarginals on both sides, the second 

 t. c. being wholly obliterated) ; legs entirely clear ferruginous, anterior 

 coxae with long spines; abdomen shining, but well punctured, black 

 inclining to reddish, especially on the hind margins of the segments, 

 with bright yellow bands, that on first segment narrow and inter- 

 rupted, with a notch on each side in front, or reduced to two little 

 crescents, or wholly absent; that on second extremely broad, but 

 greatly narrowed in the middle; fifth with most of the surface yellow; 

 venter wholly black. 



Type.— Cat. No. 13433, U.S.N.M. 



Ilale. — About 6^ mm. long; clypeus and broad lateral marks bright 

 yellow, the latter receding from orbits above. This male is very 

 close to N. tiftonensis, but the hind femors are merely dusky behind; 

 the supraclypeal mark is reduced to an obscure dot; and the meso- 

 thorax is shining, the punctures distinctly separated. It is known 

 from N. garciana by its very dark wings, very bright yellow face 

 marks, and form of lateral marks. 



HaUtat.—TjY)e (female) from Victoria, Texas, May 25, 1907 (J. D. 

 Mitchell) ; also two others from the same place, May 3 and 25, 1907 

 (J. D. Mitchell). Male from Del Rio, Texas, May 8, 1907 (F. C. 

 Bishopp). Nearest to N. tiftonensis Cockerell, from Georgia. 



NOMADA (HOLONOMADA) AFFABILIS DALLASENSIS, new subspecies. 



Female. — Looking exactly like N. zehrata Cresson, but with the meso- 

 thorax much more coarsely sculptured, and the b. n. going for basad 

 of the t. m. The flagellum is entirely clear ferruginous, in the manner 

 of N. morrisoni Cresson, not dark above as in affahilis Cresson. The 



