7G 



HYMENOPTERA OF AMERICA. 



[pah: 



frontaii.pronotimargine postico et abd. segmentorum V, 2< limbo, flavis ; 

 pedibus obscure ferrugineis. basi nigris; alis subinfuscatis. 

 Eumenea Mexicanus Sacss. Rev. Zool., 1857, VI, 272. 



9. Total length, 11 mill. ; wing, S mm. 



£. Total length, 10 mill.; wing, 7 mm. 



Not so small as the preceding; head wide, densely punc- 

 tured. Clypeus pyriform, Halt cued, terminated by two sharp, 

 spiniform teeth; a frontal carina, between the antenna? continued 

 by a delicate sulcosity up to the middle ocellus. Thorax cubical 

 before, rounded behind, nearly as wide as long; densely punc- 

 tured throughout; its anterior margin a little turned up. 



The punctures a little liner on the metathorax, those of scutel- 

 lum coarse and more distant or scattered. Disk of mesothorax 

 parted by a delicate sulcosity. Abdomen shining and polished; 

 petiole punctured but shining, at first' linear and then truncate, 

 pear-shaped, bossed, somewhal bidentate, rimmed at the extremity ; 

 the rim preceded by a strong constriction ; the pyriform part of 

 the abdomen shining and satin like; very finely punctured ; the 

 second segment a little contracted behind, slightly depressed ; that 

 is, wiiler than high, somewhat wider than long; truncated a little 

 from above downward and from before backward; that is, the 

 inferior face is a little longer than the superior; the posterior 

 border slightly sinuous in the middle; the subjacent lamina not 

 sinuous. 



Body black, clothed with a silvery-fulvous pile Mandibles 

 ferruginous at the extremity and sometimes tinged with that color 

 at base A yellow or ferruginous .-pot between the antenna?; 

 these last black above, ferruginous beneath ; often the scape is 

 chestnut-bay beneath and at base. Posterior border of the pro- 

 thorax marked with a narrow yellow line; the anterior and lateral 

 borders rufous. Scutellum often bordered with yellow or tawny 

 anteriorly, or with two yellow marks; post-scutel yellow, with 

 the anterior border black; petiole a little ferruginous on the sides 

 and on its narrow part; the two first segments of the abdomen 

 bordered by a yellow cordon ; the lamellar border of the second 

 and the margins of the following testaceus-rufous. Feet sombre 

 ferruginous; black at the base. Wings smoky. Wing scales 

 ferruginous, marked with a yellow dot on their posterior margin. 



?. Clypeus black, with a yellow macula on each side near the 



