32 Myron Harmon Szvenk 



terior band with no lateral emarginations, as in ivheeleri, but the 

 narrow median band extends across the sclerite as in engel- 

 manniae, while the mesopleura are not or but narrowly margined 

 with black, as in wheeleri. The wings and abdominal macula- 

 tions are as in engelmanniae. Altogether this specimen is inter- 

 mediate between these two forms, and indicates that engelmanniae 

 is not a distinct species. 



Nomada (Micronomada) rohweri aureopilosa Swenk. 



A renewed study of the type of this species shows that it is 

 really very close to A^. rohzveri Ckll., differing from that species 

 chiefly in its copious red hair of head and thorax (scanty in 

 rohweri) , more red tegumentary color and slightly different vena- 

 tion. In the type of aureopilosa the second submarginal cell is 

 not unusually broad and receives the first recurrent nervure only a 

 little b'eyond the middle (exceedingly broad in type of rohzveri 

 and receiving the first recurrent nervure at about two-thirds from 

 base), nor is the third submarginal much narrowed above. The 

 mesoscutum has reddish stains forming a suprategular line and 

 short discal lines posteriorly, the postorbital line and pleural spots 

 are distinct and the axillae are red, and the middle legs are wholly 

 red except the coxae {rohzveri has the mesoscutum all black, the 

 postorbital line and pleural spots obscure and the middle legs with 

 the trochanters, femora and tibiae black-spotted behind). The 

 red patch on base of tergite 2 is rounded posteriorly (pointed in 

 rohzxjeri), while the bases of tergites 4 and 5 are rather broadly 

 black and the apical margins show no red color (these tergites 

 black only at lateral base of 5 and with apical margins narrowly 

 red in rohzveri). Probably aureopilosa had better stand for the 

 present as a subspecies of rohzveri, though more specimens may 

 show the above variations to be individual, and place aureopilosa 

 as a synonym of rohzveri. 



Nomada (Micronomada) pallidelutea n. sp. 



?. Length 7.5 mm. Black, with broad and short lateral face marks be- 

 ginning a Httle below the upper clypeal level and ending in a point about 

 midway between the antennal level and summit of orbits, the mandible 

 bases, a large squarish spot below anterior ocellus, the scape in front, a 



186 



