1899.] NATURAL SCIENCES OF PHILADELPHIA. 443 



before apical margins of segments 2-5, yellow ; flagellum beneath 

 basally fulvous; four anterior femora beneath, the hind pair at 

 apex, tibi?e and tarsi entirely, outer margin of tegulse, reddish; 

 mandibles reddish, black at base with a yellow dot ; front dis- 

 tinctly punctured; clypeus elongate, somewhat iiyriform, finely and 

 closely punctured, with two carinas anteriorly terminating in two 

 well-separated teeth ; thorax strongly punctured especially the 

 middle segment, the punctures finest on pronotum, Avhich is barely 

 margined ; scutellura indistinctly impressed ; middle segment but 

 little depressed, its punctures more or less confluent; petiole fully 

 as long as thorax, gradually dilated from its basal third, almost 

 impunctate or verj' subtilely punctured, transversely depressed 

 before apex; remainder of abdomen somewhat pyriform, indis- 

 tinctly punctured; wings subhyaline, the costal margin narrowly 

 and the marginal cell fuscous ; nervures and stigma black. Length 

 12 mm. 



d". — Clypeus entirely, and two spots at extreme base of middle 

 segment laterally, yellow, in addition to the parts mentioned in 

 description of female; the spot behind base of anteunte is con- 

 tinued down to base of clypeus, and the reddish of legs is more 

 widely distributed ; clypeal carinse almost obsolete ; tegulae fulvous 

 or reddish; medial femora a little widened basally; petiole longer 

 than thorax; seventh ventral crossed by a carina some distance 

 beyond base, before this carina the surface is dull, opaque, beyond 

 it shining, punctate ; wings a little darker throughout than in ? , 

 stigma dark browu. Length 11-12 mm. 



Corumba, April, May; Santarem. One 9, twelve c? specimens. 

 Kelated to E. incerta and Icevis Saussure ; the petiole is longer and 

 more slender than in the latter, and the thorax is more maculated 

 than in incerta, in which species the clypeus is broader with the 

 carinte (comparing females) stronger. 



Humenes incerta Sauss. 



One 9, two d^ specimens. Rio de Janeiro, November. The 

 female, which has not been described, is very close to E. usitata, 

 but the punctures of middle segment are more separated and less 

 ■coarse ; other differences are pointed out in the note accompanying 

 the description of nsitata. The seventh ventral of c? is bitubercu- 

 late near base. 



