4 Myron Harmon Szvenk 



carlyn, Virginia, April 25 and May 9, and a male from Falls 

 Church, Virginia, all collected by Nathan Banks. A fifth male 

 is from Douglas county, Kansas, April. 



Nomada (Nomada) ziziae n. sp. 



$. Length 5.5-7.5 mm. Dark red ; mandible tips, subcordate area between 

 and above insertion of antennae and sometimes extending down into clypeal 

 sutures, oval spot involving ocelli, cheeks except orbital line, most of pro- 

 pleura, broad median mesoscutal line, depressed sides of mesoscutellum and 

 metanotum, median band on propodeum, metapleura and contiguous parts 

 of propodeum and basal half of first abdominal tergite, black. Pubescence 

 very sparse, white, most obvious on angles of propodeum. Antennae red, 

 joint 3 three-fifths as long as 4. Tubercles coppery red. Mesoscutellum 

 prominently bigibbose. Tegulae testaceous. Wings hyaline, the marginal 

 cell and wing tip infuscated, nervures and stigma blackish, the basal nerv- 

 ure well basad of transverso-medial, third submarginal much narrov/ed 

 above. Legs dark red, the coxae, trochanters and femora behind and at 

 base extensively blackened, the hind basitarsi wholly blackish. Outer face 

 of hind tibiae finely tuberculate, the apex of hind tibiae with two fine, dark 

 setae. Abdomen minutely and feebly punctured, dark red, the apical mar- 

 gins of the tergites becoming obscured, large, oval, clear pale yellow spots 

 on sides of tergites 2 and 3, tergite 5 with a narrow apical band of short 

 dense white hair. 



c?. Length 5.5-6.5 mm. Head and thorax black; mandibles except tips, 

 labrum, lower half or more of clypeus, sometimes the supraclypeus, and 

 lower corners of face varying from yellow to reddish testaceous, the 

 tubercles, tegulae and legs, except coxae, trochanters and basal half of fem- 

 ora, reddish testaceous. Orbital areas on sides of vertex, sometimes extend- 

 ing down orbital margins, especially anteriorly, sometimes spots on collar, 

 mesoscutellum, large areas on sides of mesoscutum, a variably sized spot 

 on mesopleura and sometimes small spots on sides of propodeum, fer- 

 ruginous. Antennae reddish testaceous below, above black for basal seven 

 joints, last six joints infuscated above, joint 3 one-half as long as 4 or 

 slightly more. Pubescence wholly white, appressed and silky on face, 

 rather copious and erect on cheeks, pleura, angles of propodeum and 

 thoracic dorsum. Mesoscutellum slightly bilobed. Wings as in the $, but 

 nervures testaceous and basal nervure varying from much to slightly or not 

 at all basad of transverso-medial. Abdomen with first tergite black on 

 basal half at least, apically reddish testaceous, following tergites reddish 

 testaceous, the apical margins of tergites 2-4 becoming broadly obfuscated, 

 tergite 2 with oval, pale yellow spots laterally, tergite 3 usually with similar 

 smaller spots. Apex sharply notched. 



Type. — Fargo, North Dakota, June 20, 1914, on Zkia aiirea 

 (No. 8137, O. A. Stevens), ?. 



158 



