24 Myron Hci4"mon Szvenk 



Nomada (Gnathias) carolinae Cockerell. 



A typical female from Lee county, Texas, March 20, 1907 (G. 

 Birkmann) is before me. A male also apparently referable here 

 is from Glencarlyn, Virginia, May 9. 



Nomada (Gnathias) fuscicincta n. sp. 



$. Length 5 mm. Dark red; coalesced oval spots above and between 

 antennal bases, large oval spot involving ocelli, cheeks behind, propleura, 

 mesopleural sutures and large areas on mesosternum, metapleura, con- 

 tiguous sides of propodeum posteriad to spiracles, median line on pro- 

 podeum, depressed sides of mesoscutellum and metanotum and three broad 

 bands on mesoscutum, black. Legs red, the coxae behind and femoral 

 bases suffused with blackish. Antennae clear red except a black mark on 

 scape behind, joint 3 very slightly longer than 4. Vertex and thorax 

 strongly, coarsely punctured, the pubescence sparse and all white. Meso- 

 scutellum feebly bilobed. Wings infuscated apically, nervures black, 

 stigma dark brown. Abdomen elongate oval, basal one-half of tergite i 

 black right across, apical margins of tergites 1-4 broadly infuscated so as 

 to form distinct bands, sides of tergite 2 with small oval yellow spots, 3 

 with similar but even smaller spots, apical white fringe on tergite 5 thin. 



c^. Length 5 mm. Black; mandible bases, labrum, line under eye, most 

 of clypeus and narrow orbital lines up to antennal level, pale yellow; 

 sometimes narrow orbital lines from antennal level over vertex and down 

 posterior margin of eye (these usually lacking), collar, sometimes lines on 

 mesoscutum (usually lacking), elevated portions of mesoscutellum and 

 metanotum, and one or two spots on mesopleura, ferruginous ; tubercles, 

 tegulae and legs reddish testaceous, the latter with the coxae, trochanters 

 and femoral bases black. Scape black, usually more or less red in front, flagel- 

 lum red except for a black line on joints 2-7 above, joint 3 subequal to or 

 slightly shorter than 4. Wings as in the ?. Abdomen pale red, basal one- 

 half of tergite I black right across, apical margins of tergites 1-5 narrowly 

 banded with fuscous, sides of tergite 2 with small yellow spots, sometimes 

 smaller spots on sides of 3 and on disk of 6. Apex deeply notched. 



Type. — Fargo, North Dakota, June 22, 191 3, on Zi::ia aurea 



(No. 5327, O. A. Stevens), (^. 



Allotype. — Type lot (No. 5326), $. 



Paratypes. — Type locality, June 21, 1913, on Zisia aurea (No. 

 5163), I ?; do., June 22, 1913 (No. 5328), i J*; do., May 30, 

 1914 (Nos. 8038-40), 3 ^; do., June 20, 1914 (Nos. 8131-35), 



5$- 



The very small size of this Gnathias distinguishes it from most 



178 



