3 1 2 Bulletin American Museum of Natural History. [Vol. XXI, 



somewhat more scattered on the pro- and mesonotum and still more so on the 

 scutellum, and somewhat elongated on the mesonotum; but much larger and 

 almost confluent on the basal surface of the epinotum. Pro- and metapleurae 

 longitudinally rugose, mesopleuras very finely punctate-rugulose. Posterior 

 petiolar surface finely and transversely rugose. In one specimen the two basal 

 segments of the gaster are yellow throughout, with a faint fuscous cloud in the 

 middle of the second segment; in another specimen the gastric markings are 

 like those of the worker. Pilosity like that of the worker. 



Male. — Length, 4 mm. 



Head, including the eyes, broader than long, broadly rounded behind, with 

 prominent ocelli; cheeks short, converging anteriorly. Mandibles well devel- 

 oped. Clypeus with straight anterior border, entire in the middle. Antenna 

 rather long; scape hardly as long as the two first funicular joints, first joint 

 about half as long as the second, which is distinctly longer than the succeeding 

 joints; joints 3-1 1 subequal, cylindrical; terminal a little longer than the 

 penultimate joint. Thorax barely as broad as the head through the eyes. 

 Epinotum in profile with somewhat flattened basal and declivous surfaces 

 meeting at a rounded obtuse angle. Petiole decidedly longer than wide or 

 high, blunt above, with a short convex anterior and a long, flat, posterior sur- 

 face; seen from behind, the upper border is rounded. Gaster elongate-elliptical, 

 more slender than in the worker. External genitalia rounded and lappet-like. 

 Legs long and robust. 



Head and thorax subopaque, finely reticulate. Mandibles finely striated. 

 Clypeus and front rather indistinctly punctate-rugulose; posterior portion of 

 head, pro- and mesothorax sparsely foveolate. Pleurse, scutellum, and epinotum 

 granular. Petiole, gaster, and legs smooth and shining. 



Pilosity like that of the worker. Pubescence finer and denser on the gaster 

 and legs. 



Head and thorax black, mandibles, antennas, legs, petiole, and gaster dark 

 brown. Wings whitish hyaline, with yellow veins and stigma, the latter with 

 a dark brown posterior border. 



The types of this species are from "Ilhnois" and are preserved in 

 the Museum of Stockholm. 



The above description is drawn from a number of workers col- 

 lected near Rockford, Illinois, two females, one taken on Staten Island 

 by Mr. Wm. T. Davis and the other at Lakehurst, New Jersey, by 

 myself, and a single male taken at Newport, Rhode Island, by Joseph 

 Leidy (Collection of American Entomological Society). There are 

 workers in my collection from the following localities: Arlington, 

 Virginia; Lakehurst, New Jersey; lona, New Jersey (Erich Daecke), 

 and Jamesburg, New Jersey (Wm. T. Davis) ; summit of Torne 

 Mountain, Ramapo, New York (Wm. T. Davis), Lehigh Gap, Pennsyl- 

 vania (H. L. Viereck), and Colebrook, Connecticut. The species has 

 also been taken in Canada by Provancher and in the District of Co- 

 lumbia by Pergande. 



