36 Myron Harmon Swenk 



mark on sternite i and the apical margins of the sternites more or less 

 black or blackish. 



Type. — Indianola, Red Willow county, Nebraska, April 22, on 

 Salix nigra (L. Bmner), (^. 



Paratype. — Type lot, i J*. 



This species belongs to the Komada simplex group and differs 

 at once from A", simplex Rob., in having the flagellum not dis- 

 tinctly sinuate above and more extensively red, the lack of clear 

 yellow color on the legs, the heavier scape, the yellow spotted 

 mesoscutellum and the longer upward extension of the lateral 

 face marks. The rather short flagellar joints indicate relation- 

 ship to N . saJicis Rob., but these joints in salicicola are yet 

 longer than wide, while the apex is feebly notched, there is no 

 mesopleural spot, the legs have no clear yellow color and the basal 

 nervure is basad of the transverso-medial nervure. From A''. 

 pallidella and A^ aprilina it differs chiefly in the low, scarcely 

 subbilobed mesoscutellum, feebly notched apex, longer third 

 antennal joint and the flagellum red above beyond the fourth 

 joint. 



Nomada (Nomada) parallela n. sp. 



(^. Length 7 mm. Black ; the clypeus, labrum, mandibles except tips, 

 line extending under eye and a short distance up posterior orbits, latera! 

 face marks extending in a 'narrow line along anterior orbits about to 

 lower level of insertion of antennae, scape and first joint of flagellum in 

 front, tubercles, collar, a spot on mesopleura (on a larger reddish spot), 

 tegulae and abdominal maculations, rather bright yellow. Flagellum 

 beyond first joint brownish red, the scape behind and a line within, which 

 becomes narrower and less intense toward the apex and finally disappears 

 in a dusky streak on the apical joint, black or blackish. Antennal joint 

 3 three-fifths as long as 4, joints 4-13 very feebly sinuate above because 

 of distinct, broad, suboval, slightly concave, glabrous areas, defined 

 laterally by depressed lines, which involve most of the under surface of 

 each joint. Anterior orbits subparaliel, the interorbital width at nar- 

 rowest point scarcely one-tenth less than width at vertex. Head and 

 thorax coarsely and closely punctured, the mesoscutum with four longi- 

 tudinal reddish lines, the inner pair of which are longer and more dis- 

 tinct. Vertex and thorax with long, erect, rather copious grayish white hair. 

 Mesoscutellum red, scarcely bilobed. Wings hyaline, apically darkened, nerv- 

 ures and stigma pale brown, basal nervure slightly basad of transverso- 



36 



