AMERICAN HYMENOPTERA. 203 



line behind, and two spots on metathorax, all yellow; upper anterior orbits 

 and flagelhiin ferruginous, second and third joints of the latter about equal in 

 length; soutellum subbilobate; wings dusky, stained with yellowish, apical 

 margins darker; legs yellow, coxae and trochanters behind, base of femora and 

 behind more or less and spot or line on tibise behind, black, tarsi pale fer- 

 ruginous; abdomen very minutely punctured, shining, yellow, the three basal 

 segments above black, each with a broad yellow submedian band, narrowed in 

 the middle, that on the first segment sometimes varied with ferruginous on the 

 diskj apical margin of terminal segments rufo-testaceous. Length .43 inch. 



Hah. — Nevada, (Morrison). Two specimens. 



IVoniada verecuiida. — 9. — Small, black, rather closely punctured; 

 sides of face broadly, posterior orbits, clypeus except two spots at base, labrum, 

 mandibles except tips, scape in front, line on prothorax above, tegulae, tuber- 

 cles, mark beneath tubercles confluent or nearly so with a smaller one behind, 

 scutellum, sometimes a line on postscutellum, and spot in front of each inter- 

 mediate coxa, lemon-yellow; flagellum black above, testaceous beneath, second 

 joint longer than third; scutellum flattened; wings dusky at tips; legs black, 

 tips of coxae and femora, four anterior tibiae except spot behind, base and apex 

 of posterior tibise and all the tarsi, lemon-yellow; abdomen shining, segments 

 2 — 5 each with a broad continuous lemon-yellow band, those on two and three 

 dilated laterally, second segment with a narrow band of same color slightly 

 emarginate on each side posteriorly, apex with silvery pile; venter with three 

 broad yellow bands. Length .30 — .35 inch. 



%. — Much like the J; face with a silvery pile, and not so broadly yellow 

 at the sides, and the cheeks immaculate except beneath the eyes; flagellum 

 shorter, with close-set joints; the yellow spots on pleura reduced or entirely 

 wanting; the yellow band on first segment of abdomen broader and not 

 emarginate posteriorly. Length .30 — .35 inch. 



Hah. — Nevada, (Morrison). Numerous specimens. This pretty 

 little species may be easily recognized by the black annulus on pos- 

 terior tibise and immaculate metathorax. 



IVomada Slida. — 9 .—Black; thorax coarsely and confluently punctured; 

 sides of face, orbits interrupted at summit of eyes, clypeus, except short black 

 line and dot on each side, spot above, labrum, mandibles except tips, scape 

 beneath, line on prothorax above, tegulse, dot in front, tubercles, large mark 

 on sides of pleura, two spots beneath, scutellum and two broad wavy stripes 

 on metathorax, all yellow; face shining; flagellum ferruginous, second joint a 

 little shorter than the third; wings faintly dusky, dark on apical margin; legs 

 yellow, coxae beneath and the femora above and beneath more or less, black, 

 abdomen yellow, base of first and narrow apical margin of segments 1 — 4 

 black or brown; venter yellow, sometimes black on posterior middle of the 

 segments. Length .30 inch. 



Hah. — Nevada, (Morrison). Two specimens. 



Philerenius ? productiis.— 9 .—Black, coarsely and confluently punc- 

 tured, clothed with a short coarse whitish pubescence, dense on face, cheeks 

 and sides of thorax; antennae short, stout, black; scutellum large, flattened, 

 with an erect subacute spine at tip; tegulse rufo-piceous; wings stained with 



