y8 M yroii Ilannon Swcnk 



Sides of the proiioiUnini not at all anyulatod : nK'soscutollum llattish, 



weakly bilobate (if at all) ; autumnal species 2 



I. Posterior orbital margins black; face witb considerable black bc- 

 neatli level of insertion of antennae medially; lateral face marks 

 not altainint^' smnmit of orbits; usually but a small or no 

 pleural spot, tlie mcsoscntellum with two yellow spots, metano- 

 tum black; trochanters black, the tibiae, except a red spot on 

 posterior face, and the tarsi, yellow ; apical margin of tergite 



I and most of venter, black; 10-13 nun siipcrba 



I. Posterior orbital margins with a yellow line; face beneath level 

 of insertion of antennae wholly yellow; lateral face marks 

 extending up to sunmiit of orbits; a large pleural spot, the 

 mesoscutcllum and a line on metanotuni. yellow; trochanters 

 and most of tibiae red, the tarsi and apices with more or less 

 of the anterior faces of the first four tibiae, yellow; apical 

 margin of tergite 1 and most of venter, red ; 10 nun. 



supcrba »hilz<astri 



2. Abdominal tergite i entirely black or with small yellow lateral spots, 

 2-4 with broadly interrupted, 5-6 with narrowly complete yellow 

 bands; propodeum wholly black; tlagellum black above, 

 obscurely reddish below; scape normal; yS mm placida 



2. Abdominal tergite i black with large lateral spots, 2 with a narrowly 

 interrupted band, 3-5 with complete bands, all cream color; 

 sides of propodeum with cream color elongate oval spots; 

 flagellum dusky beyond second joint; scape subglobose; il 

 mm dazvsoni 



2. Abdominal tergites 1-6 with complete yellow bands ; sides of propodeum 

 with large yellow spots ; flagellum red with a dark median 



ring ; scape swollen 3 



3. Mesoscutum black with the lateral margins sometimes obscurely 

 reddish; scape more swollen, a distinct black ring on antennal 



joints 6-12; 7-1 1 mm z'iiicta 



3. Alesoscutum black with broad yellow lines on the lateral margins ; 

 scape less swollen, the tlagellar ring less distinct, merely dusky; 



9-II mm rr^/-(i/fl 



(The male of iicbrasccnsis is unknown or unrecognized.) 



Nomada (Holonomada) superba Cresson. 



1S63. Nomada superba Cresson, Proc. Ent. Soc. Phil, II, pp. 281-82, c?. 

 189". Nomada superba Robertson, Trans. Acad. Sci. St. Louis. VII, 



pp. 340-41, ?, c?. 

 1003. Holonomada superba Robertson, Can. Ent., XXXV, p. 177, ?, d". 

 1905. Nomada superba Cockerell, Bull. 94, Colorado Exp. Sta., p. 73, 



d* (in part'). 



78 



