HYMENOPTERA— APIDAE.— NOMADA GRANDIS. 725 



108. MEGACHILE PRULNA. 

 Megachile pruina, Smith, Brit. Mus. Cat , i, 190. 



10 8 ? specimens; Eastern Nevada; 1872; Dr. H. C. Yarrow: 

 Colorado, New Mexico ; Dr. H. C. Yarrow, Dr. Oscar Loew. 



100. MEGACHILE DISPARILIS. 

 Megachile disparilis, Cuess., Trans. Am. Eut. Soc, iv, 264. 



1 $ specimen; New Mexico; H. W. Henshaw. 



110. ANTH1D1UM MACULIERONS. 

 Anthidium maculifrons, Smith, Brit. Mus. Cat. Hym., ii, 214. 



1 £ specimen; Colorado; Almont Barnes. 



111. ANTHIDIUM EMARGINATUM. 

 Megachile emarginata, SAY, Long's 2d Exped., ii, 352. 



2 $ specimens; Eastern Nevada; 1872; Dr. II. C. Yarrow. 



112. ANTHIDIUM ZEBRATUM. 

 Anthidium zebratum, Cress., Trans. Am. Ent. Soc, iv, 270. 

 1 S specimen; New Mexico; Dr. H. C. Yarrow. 

 113. NOMADA GRANDIS, sj}. nov. 



9 . — Head ferruginous, densely punctured ; face clothed with yellowish 

 pubescence ; apical half of mandibles black ; posterior orbits more or less 

 yellowish ; the ocelli are sometimes surrounded by a blackish stain ; 

 antennae ferruginous, paler beneath and at extreme tip above. Thorax fer- 

 ruginous, very densely and confluently punctured; collar yellow; meso- 

 thorax with a deeply impressed longitudinal line in front and a black central 

 stripe ; tubercles sometimes yellow, deeply notched anteriorly with black- 

 ish ; scutellum subbilobate, entirely yellow, with a transverse line behind 

 it ; metathorax densely clothed ■with yellowish pubescence, black at base 

 and down the middle, yellowish on the sides ; tegulse ferruginous. Wings 

 subhyaline, the apical margins broadly and costal half of marginal cell 

 fuliginous ; nervures at base of wing, costal nervure and stigma ferruginous. 

 Legs ferruginous, clothed with short, golden pubescence ; coxae pubescent, 

 base of middle pair black; Abdomen broad, ovate, very finely and densely 

 punctured, shining, bright yellow ; basal half of first segment, as well as 



