140 Zoologica: N. Y. Zoological Society [HI; 4 



not backward. Postpetiole from above twice as broad as the 

 petiole, nearly twice as broad as long, very convex above, but 

 strongly narrowed and constricted anteriorly where it bears 

 on the ventral surface an acute downwardly directed projec- 

 tion, smaller than that on the petiole ; middle of the ventral sur- 

 face strongly protuberant. Gaster elongate; sting long. Legs 

 rather slender. 



Smooth and shining, especially the head, which is very 

 sparsely punctate; on the thorax the punctures are smaller and 

 somewhat denser, and the gaster is very finely and superficially 

 punctate and therefore appears somewhat less shining than the 

 head and pronotum. Mandibles at their tips very finely striate 

 and with coarse, elongate punctures; cheeks and pleurse finely 

 and superficially punctate. 



Hairs sparse, golden yellow, erect or suberect on all parts 

 of the body, rather short on the whole, longest on the petiole. 

 Pubescence fine, distinct on the gaster, postpetiole, petiole, 

 pleurse, tarsi, tibiae, funiculi and gula, not concealing the surface 

 but rendering it somewhat less shining. 



Brownish yellow; mandibles reddish brown, with black 

 teeth; ocellar region, sutures of thorax, petiole, postpetiole, a 

 patch on the center of each segment of the venter, the meso- 

 pleurae, the femora, except their bases and tips and sometimes 

 portions of the tibise, varying from pale to dark brown or black- 

 ish, clypeus and adjoining portions of head pale, clear yellow. 



Female. Length : 7.5-9 mm. 



Resembling the worker, but the head longer, with less con- 

 vex sides and somewhat larger and more convex eyes and oc* Hi. 

 Mandibles convex as in the worker, their external borders not 

 geniculate at the base. Thorax rather long, in the region of the 

 wing-insertions scarcely as broad as the head. Mesonotum rather 

 convex, as long as broad. Epinotum sloping, the base one and 

 one-half times as long as the declivity, which is even more abrupt 

 than in the worker. Petiole and postpetiole somewhat longer in 

 proportion to their width. Wings narrow and rather short, 

 only 6.5 mm. long. 



