144 AMERICAN HYMENOPTERA. 



Pile rather fine. Head and thorax black {fro7it part of male thorax 

 often with jnore or less light or yellow pile) ; abdomen with basal seg- 

 ments black and apical segments ferruginous. Wings dark. Heads of 

 queen and worker short and broad. Male with large eyes. 



I have never seen either the queen or the worker of this 

 species. Handlirsch described them together as follows : 



"Head short and broad; clypeus strongly arched, thickly and 

 coarsely punctate, somewhat less so in the middle ; labrum deeply im- 

 pressed in the middle ; malar space nearly one-half shorter than it is 

 broad at the end ; mandibles and antennae as in dolichocephabis . 

 Hind metatarsus moderately pointed at the end. Hypopygium with- 

 out a carina." 



He also remarked concerning them as follows : 



" The queen and worker agree as strikingly with the foregoing spe- 

 cies " {dolichocephabis) " in the black color of the body with the red 

 end segments as in the dark brown-black wings with their violaceous 

 reflections." 



Male. Head. — Broadly rotund-triangular. Pile entirely dark. Malar 

 space but little more than half as long as its width at apex. Clypeus 

 coarsely and densely punctate and very thinly clothed with rather long 

 black hairs. Ocelli large and placed squarely in the narrowest part of 

 the vertex, at about one-third the distance from the supra-orbital line 

 towards the bases of the antennae (eyes not converging above them at 

 all), the lateral ones separated from the inner margins of the eyes by 

 distinctly less than their own diameter. Eyes swollen a little less than 

 those of crotchii male, slightly more than those of males of morrisoni 

 and separatus. Third and fifth antennal segments about equal in 

 length. 



Thorax. — Center of disc of dorsum bare (the greater part of the 

 dorsum has the appearance of having the pile rubbed off more or 

 less), smooth and shining. Pile all dark, apparently usually pure 

 black, but sometimes brown (the anterior portion of the dorsum of 

 one specimen has a strong admixture of yellow hairs and probably 

 there is sometimes a distinct yellow band in that region). 



Abdomen. — Dorsum : segments one, two and three with black pile ; 

 basal portion of segment four with black pile and its apical portion 

 clothed like segments five and six ; segments five and six bearing only 

 ferruginous-red or light ferruginous pile. Venter mostly dark, but 

 with the apical fringes of the three apical segments more or less 

 strongly ferruginous. Hypopygium broadly emarginate at apex. 



Genitalia. — Outer spatha short and broad, resembling considerably 

 that of separatus (fig. 29) , but with anterior margin much less strongly 

 incurved and side margins not incurved in front ; middle of apical por- 

 tion of ventral surface with only a few hairs and these short and in- 



