230 



WHEELER, 



much thickened apically, first funicular joint as long as broad, joints 

 2-9 very transverse, terminal joint large, glandiform, fully as long as 

 the five preceding joints together. Thorax about 2| times as long as 

 broad, with flattened dorsum, rounded humeri and epinotal angles, 

 as broad behind as in front, with very feebly indicated mesoepinotal 

 suture. Pronotum not marginate, epinotal declivity marginate 

 only on the sides, in profile truncated and decidedly concave. Petiole 

 narrower than the epinotum, rectangular, a little longer than broad 

 and a little broader behind than in front, its dorsal surface convex, 

 its anteroventral surface with a small, acute tooth. Postpetiole 

 rectangular, broader than the petiole, as broad as long, a little broader 

 behind than in front, with straight sides. Gastric segments 1-3 



Figure 3. a, Female Eusphindus hackeri sp. nov., lateral view; b, head of 

 same, dorsal view; c, thorax and abdomen of worker, dorsal view; d, head of 

 same. 



nearly twice as broad as long. Pygidium short, broadly rounded and 

 truncate behind, where it is bordered with minute spinules. 



Shining; mandibles coarsely punctate; head, thorax, petiole and 

 postpetiole Covered with umbilicate, piligerous foveol?e, which are 

 densest on the upper surface of the head, elongate on its front and 

 sides; gaster rather coarsely and evenly punctate. Antennal scapes 

 sparsely foveolate. 



Hairs pale yellow, short, erect, moderately abundant, longer at the 

 tip of the gaster; pubescence'dilute. Legs with fine, dilute, appressed 

 pubescence and a very few% erect hairs. 



Uniformly brownish yellow, not infuscated. 



Female. Length 1.8 to 2 mm. 



Differing from the worker in size and in having eyes and ocelli, the 



