54 Myron Harmon Szuenk 



on 5 pale yellow. Apex red, distinctly terminally notched, the pygidial 

 area narrow. Venter yellowish red, a cordate basal mark and apical suf- 

 fusion on sternite i black, sides of sternites 2-5 with curved yellowish 

 marks which meet medially on sternites 4 and 5, 6 with a yelllow apical 

 spot. Head and thorax with thin white hair, dense and appressed on 

 clypeus and labrum, erect and longer on cheeks, pleura, sternum and sides 

 of propodeum, shorter sparser and grayish on vertex and mesonotum. 

 the scape with fuscous bristles obvious only in certain lights. 



Type. — -Peck, Idaho (collector unknown, probably J. M. 

 Aldrich), c^. 



In the almost wholly black clypeus this species resembles A^. 

 sidaefloris Ckll., but differs in the largely pale legs, mostly black 

 first abdominal tergite and very much shorter third antennal 

 joint; otherwise the lack of yellow on the clypeus is diagnostic. 

 From a metatype of N. (Phor) vexator Ckll., and a specimen 

 from the type lot (Troublesome, Colorado, June 9, 1908, S. A. 

 Rohwer), it differs in the narrower and reddish instead of yellow 

 apical margin of clypeus, black scape, troader and distinctly 

 notched apex, etc., though they show a slight relationship to each 

 other. Its affinities are probably closest to .V. sayi Rob., among 

 the Nebraska species, from which it dift'ers in numerous 

 characters. 



Nomada (Nomada) accepta Cresson. 



1878. Xomada accepta CresSon, Trans. Am. Ent. Soc, VII, pp. 77-7^- 



1878. Nomada pacata Cresson, ibid., VII, p. 81, $. 



1903. Nomada accepta Cockerell, Ann. Mag. Nat. Hist., ser. 7, XII, 



p. 447. 

 1905. Nomada accepta Cockerell, Bull. 94, Colorado Exp. Sta., p. 



74, Sd*. 

 191 1. Nomada accepta Cockerell, Proc. U. S. Nat. Mus., XLI, p. 



237, c?. 



The writer has before him two females from Colorado Springs, 

 Colorado, which agree perfectly with Cresson's description of 

 A^. pacata, which Cockerell says is the same as N. accepta. The 

 record of this lot has already been published (see above, 1903), 

 these specimens bearing the number 24 (L. Bruner). 



54 



