1899.] NATURAL SCIENCES OF PHILADELPHIA. 459 



reddish yellow; apical segments yellowish testaceous; front as in 

 rnfomaculata, but not quite so strongly punctured; clypeus if 

 anything slightly longer and narrower; pronotum with shallow 

 punctures, finely margined, rounded laterally; dorsulum with 

 deep separated punctures, the medial impression of base not very 

 strong; scutellum with large sparse punctures, fewest basally; 

 middle segment deeply and narrowly concave medially, the con- 

 cavity narrower than rnfomaculata, with its walls steeper; punc- 

 tures of middle segment rather shallow, those on sides deeper, btit 

 not larger; ^^etiole almost linear, longer than head and thorax, 

 medially impressed and strongly punctured above, the gradual en- 

 largement beginning very near base, and then slightly contracted 

 at about middle, so that the sides are somewhat sinuous, a trans- 

 verse depression before apex; second dorsal segment compressed, 

 with strong dense punctures becoming feeble and sparse on sides; 

 wings fusco-hyaline, nervures and stigma black. Length 14- 

 15 mm. 



Santarem. Two specimens. 



Table of New Species of Eumenes. 



1. Petiole of abdomen with a long slender base, swollen at apex, 



or campanulate 2 



Petiole of abdomen with a short thick base, the enlarged 

 apical portion usually lengthened, with its sides more or less 

 parallel 24 



2. Head from front at least as long as broad, the clypeus longer 



than broad 3 



Head broader than long, the clypeus broader than long, or its 

 width equalling its length 12 



3. Petiole short, campanulate 4 



Petiole at least as long as thorax 5 



4. Black; mandibles reddish yellow; wings fuscous on basal half, 



apically subhyaline bipartita $. 



Testaceous yellow, variegated with black; wings subhyaline, 

 yellowish along costa testacea ? d'. 



5. Greater part of thorax black 6 



Greater part of head, thorax and legs yellow ; wings subhya- 

 line yellowish along costa p?c/Mr cia cJ*. 



