86 Myron Harmon Szvenk 



across middle of mesopleura, large spots on the apices of the anterior 

 faces of the coxae, two round spots on mesoscutellum, elevated portion 

 of metanotum, narrow even and continuous bands across the middle of 

 tergites 1-5 and similar bands on sternites 2 and 3, that on 2 narrowly 

 medially interrupted, bright contrasting lemon yellow. Antennae black, 

 the scape behind and on lower half in front and the third antennal joint 

 obscure red, the scape swollen as in viiicfa, joint 3 very distinctly longer 

 than 4. Face square, orbits parallel. Head and thorax coarsely, closely 

 and shallowly punctured, tergum indistinctly punctured, venter largely 

 shining and impunctate. Entire body nearly devoid of hair, some exceed- 

 ingly short and thin pale hair on cheeks, vertex, mesoscutellum and 

 metanotum. Legs black; the tarsi, anterior faces of the first four tibiae 

 and front femora, a line on posterior tibiae and posterior femora in front, 

 and ends of middle femora, more or less reddish, while the posterior 

 apical margins of the trochanters, knees of middle and hind legs and lines 

 at ends of their femora, spot at apex of outside of middle tibiae and a 

 broad line on posterior tibiae behind, are yellow. Tegulae red, shining, 

 strongly sparsely punctured. Wings clouded with the apical margin dark- 

 ened, clearer areas beyond and below submarginals, the nervures and stigma 

 fuscous, basal nervure interstitial with transverso-medial nervure, the sub- 

 marginal cells moderately narrowed above. Apex entire, rounded. 



Type. — Manhattan. Kansas, August 24, 1908, on Helianthus 

 tiiberosus (O. A. Stevens, No. 933), J*. 



A very handsome, neat and distinct, contrastingly black and 

 yellow, species, which the writer takes great pleasure in dedicat- 

 ing to Dr. Charles E. Bessey, under whose able direction his 

 studies on the role of bees in the pollination of the Nebraska flora 

 is being carried on. The species seems to fall near to A'^. placida 

 Cresson, but is distinct at once in its larger size, yellow band on 

 tergite i and complete bands on 2 and 3, mostly black clypeus and 

 mandibles, black flagellum, red tegulae, and numerous other dif- 

 ferences. It is also very closely allied to N. vincta Say, and to 

 N. affahilis Cresson, but differs at once in the black propodeum 

 and flagellum, largely black clypeus, posterior orbits and legs, etc. 

 The propodeum is not angulated above as in the spring-flying 

 supcrba group. 



Nomada (Holonomada) aquilarum Cockerell. 



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

 pp. 208-09, c?- 



