448 PROCEEDINGS OF THE ACADEMY OF [1899. 



entirely reddish; medial femora not enlarged basally ; seventh ven- 

 tral segment elongate, truncate, depressed, except at sides and 

 base; stigma yellowish. Length 11 mm. 



Chapada, September; Sautarem. One of each sex. 

 Eumenes tinctura n. sp. 



9. — Black; pronotum, mesopleurie, the scutella, postero-lateral 

 angles of middle segment, four anterior femora except base, tibiae, 

 petiole medially, and antennse, except flagellum above from second 

 and third joints, rufous ; sides of clypeus, spot between insertion 

 of autennse, one almost filling the eye-emargination, hind orbits 

 above, hind margin of pronotum, line on both scutella anteriorly, 

 and a rather broad apical band on segments 1 and 2 emarginate 

 anteriorly in middle, yellow; remaining segments margined with 

 testaceous; front with tolerably strong, separated punctures, with 

 silvery sericeous pile; ocelli in curved line; clypeus convex, im- 

 punctate, but slightly longer than broad, with two short, approxi- 

 mate teeth at apex separated by a rounded notch; flagellum 

 clavate; thorax with strong, sepai-ated punctures, those on scutel- 

 lum largest; pronotum finely margined; middle segment broadly 

 depressed posteriorly; petiole distinctly longer than thorax, broad- 

 ened from just before its middle, strongly punctured, basal stem 

 slender, a rounded pit in the middle before apical margin, before 

 which on each side of pit is a transverse depression ; remainder of 

 abdomen ovate, second dorsal less strongly and more closely punc- 

 tured than petiole ; wings subhyaline, fuscous in costal and mar- 

 ginal cells, but this clouding does not fill them completely; nervures 

 and stigma black. Length 8 mm. 



Corumba, April. One specimen. A male specimen from 

 Chapada (January), I refer doubtfully to this species; it is 

 similarly colored, but the red of mesopleurse is confined to the top, 

 the petiole is rufous apically, the clypeus entirely yellow with the 

 abdominal segments all margined with that color, which is also 

 commingled with the rufous on mesopleurse, middle segment, 

 femora and tibiae ; postero-lateral angles of middle segment some- 

 what compressed ; seventh ventral segment rounded at apex, indis- 

 tinctly depressed or furrowed medially. Length 10 mm. 

 Eumenes invenusta n. sp. 



9. — Black, with thin cinereous pile; spot between insertion of 

 antennaj, in emargination of eye, sides of clypeus narrowly, scape 



