1899.] NATURAL SCIENCES OF PHILADELPHIA. 447 



angle, and a line on dorsals 3-6 before apex, yellow; sculp- 

 ture coarser; clypeus with the teeth widely separated, the carinse 

 only evident on them; medial femora not widened basally; 

 seventh ventral segment smooth, or finely punctured, slightly 

 emarginate on each side before apex, so that it appears produced 

 in middle at apex. Length 9 mm. 



Corumba, April; Chapada, November, December. Four 9, 

 one cJ' specimens. This is a more robust species than suffiisa or 

 uruguayeiwis. 



aa. Head from front broader than long. 



1. Second segment evenly convex above and beneath. 



Eumenes colorata n. sp. 



9. — Head yellow, the front, vertex and occiput black; mandi- 

 bles except base, a central longitudinal line on clypeus and flagel- 

 lum beneath ferruginous ; thorax, except the black dorsulum, yel- 

 low, a ferruginous stain on each side of pronotum, scutellum 

 apically except a small black spot, and sides of thorax and mid- 

 dle segment indistinctly; coxae and femora above pale ferruginous; 

 basal one-fifth of petiole black, the remainder pale ferruginous- 

 yellow, with a yellow apical border; remaining segments black, 

 margined with yellow ; front with strong separated punctures with 

 golden pile; ocelli in a curved fine; clypeus subquadrate, sparsely 

 punctured, with two sharp approximate teeth at apex ; flagellum' 

 subclavate (?), (joints 9-11 missing); thorax much longer than 

 broad, with strong punctures, those on scutellum largest ; pronotum 

 scarcely margined ; middle segment broadly depressed or shallowly 

 concave posteriorly, with thin golden pile, sides sparsely punc- 

 tured ; petiole a little longer than thorax, with sparse punctures, 

 narrow, somewhat clavate, being gradually broadened from a 

 point beyond its basal third, transversely impressed before apex ; 

 remainder of abdomen short ovate with brownish sericeous pile; 

 second dorsal with shallow separated punctures ; wings subhyaline, 

 faintly tinged with yellowish in costal cell ; nervures and stigma 

 brownish. Length 11|^ mm. 



cP. — Colored like 9, except that the black of front extends as 

 far as base of clypeus on each side of insertion of antennae; the 

 ferruginous more pronounced on thorax, forming the background 

 for the yellow which appears as maculations; flagellum almost 



