240 PROCEEDINGS OF THE ACADEMY OF [Feb., 



with fine longitudinal rugne separated b}^ densely foveolate punctures. 

 Thorax opaque, coarsely and irregularly longitudinally rugose, except 

 just back of the neck where there are a few transverse rug£e. The 

 rugse on different parts of the thorax are so fine that their trend is 

 hardly discernible except under a high magnification. Lower pleurae 

 foveolate-punctate. Petiole and postpetiole somewhat less roughly 

 sculptured than the head and thorax; both densely foveolate-punctate; 

 punctures on the petiole somewhat coarser than on the postpetiole, 

 which therefore often appears smoother. Gaster and legs smooth 

 and shining. 



Hairs whitish, those on the head, thorax and pedicel shorter and 

 more clavate than those on the gaster. Hairs on the legs and antennae 

 short, non-clavate and appressed. 



Yellow; head, thorax and gaster tinged with l^rown; mandibles, legs, 

 antennse and venter pale, sometimes whitish; edges of mandibles 

 and a large triangular spot on either side of the first gastric segment, 

 black or dark-brown. In some specimens the femora are slightly 

 infuscated. 



Female (dealated). — Length 2.75-3.3 mm. 



Longitudinal rugse of the head more prominent than in the worker. 

 Pronotum coarsely reticulate-rugose. Mesonotum shining, especially 

 in front and in the parapsidal regions, longitudinally rugose, as are 

 also the paraptera and scutellum. Epinotum with coarse, transverse 

 rugse, especially below the spines, which are shorter and stouter than 

 in the worker. Pleurae and sterna coarsely longitudinally rugose. 

 Sculpturing of the petiole and postpetiole like that of the worker but 

 more pronounced, so that these segments are quite opaque. Upper 

 surface of head, scutellum, posterior portion of epinotum, wing-inser- 

 tions, lower pleurae, posterior portions of petiole and postpetiole, 

 a broad band across the first gastric segment and all except the borders 

 of the posterior gastric segments, dark-brown or black. 



Type locality : ? District of Columbia. 



Additional localities: Virginia (Mayr) ; Beatty, Pa. (Schmitt) : Bel- 

 mont, N. C. (Schmitt) ; Covington, Ky. (Schmitt) ; New York (Emery) ; 

 New Jersey (Emery). 



This species in its typical form appears to be confined to the Eastern 

 ITnited States. Patton found small colonies of it nesting in the hollow 

 galls on the golden-rod (Soliclago). Rev. P. J. Schmitt, O.S.B., who 

 has frequently taken the species in Pennsylvania, sends me the fol- 

 lowing note on its habits: ''In one locality at least where curvispi- 

 nosus was abundant the colonies were in saplings of ash, the tops of 



