440 PROCEEDINGS OF THE ACADEMY OF [1899', 



cf. — Basal half of flagellum beneath, and terminal joint, red- 

 dish yellow; elypeal carinse almost obsolete barely evident except 

 on apical teeth ; punctuation coarser than in ? ; petiole above 

 slightly longitudinally impressed medially; wings darkened along 

 costal margin only; clypeus, except apex line on scape and apical 

 margin of sixth ventral segment, yellow ; seventh ventral smooth,^ 

 broadly rounded at apex. Length 13 nnn. 



Chapada, March, October, November. Two examples of each 



Eumenes laeviventris n. sp. 



9. — Black, clothed with sericeous gray pile; a spot in the sinu& 

 of eye, short line on orbits behind and at sides of face, dot at 

 summit of eye, posterior margin of pronotum medially, dot behind 

 tegulse, two spots on scutellum, spot on four hind coxie and at tips 

 of four anterior femora, stripe on all tibise and narrow line at 

 apex of petiole, yellow; flagellum beneath except medially, ful- 

 vous; petiole ringed with reddish near base; front with distinct 

 separated punctures ; ocelli incurved line; clypeus broad, subcor- 

 date, finely punctured, convex, not carinate, terminating in twa 

 acute teeth ; pronotum with shallow, subtile punctures, very finely 

 margined ; dorsulum with stronger, scattered punctures, anteriorly 

 in middle with an impressed line, and at apex with four short, 

 stronger impressions, of which the two inner are most approximate; 

 scutellum subcarinate basally, impressed apically; middle segment 

 with strong, separated punctures, broadly depressed or concave, 

 the medial furrow distinct, foveolate; petiole almost or quite a& 

 long as thorax, more rapidly enlarged than in E. insignis, impunc- 

 tate, transversely depressed before apex; remainder of abdomen 

 ovate, smooth ; wings broadly fuscous along costal margin as far as 

 stigma, the latter brownish or blackish as Avell as nervures. 

 Length 13-15 mm. 



cf. — Clypeus entirely, inner orbits of eye from base of clypeus 

 to within the emargination, scape beneath, spot behind base of 

 antenna, two spots on pronotum anteriorly, and rarely two spots on 

 middle segment, yellow ; on the legs this color is much more widely 

 distributed than in ? ; clypeus smaller, roundly emarginate at 

 apex, the carinse almost obsolete; seventh ventral segment furrowed 

 down middle. Length 13-15 ram. 



