MANN: THE ANTS OF BRAZIL. 467 



contour and feebly margined. Mesonotum oval, about one and one 

 half times as long as broad, in profile gently rounded from base to the 

 mesoepinotal impression, which is broad and deep. Epinotum more 

 than twice as long as broad, with the base a little longer than the 

 declivity; in profile the base is rounded, the declivity slightly convex; 

 the surface of the base is convex, except at the apical end, where there 

 is a narrow shallow transverse impression, posterior to which is a 

 slightly elevated margin; the basal surface is flat. Petiolar node thin, 

 in profile convex in front, concave behind, the apex thinly margined; 

 the margin not extending down the sides. 



Head shining, minutely, closely punctate, thinly covered with 

 short, suberect pile; antennae thinly pilose; mandibles punctate and 

 pilose. 



Thorax, epinotum, and petiole somewhat shining, punctate, simi- 

 lar to but more coarsely than the head, and more thinly pilose; 

 the posterior surface of the node with fine transverse striolae and 

 glabrous," except for several .long hairs at the apex. Thorax shining, 

 minutely punctate, thinly pilose. 



Color black, except the legs, petiolar node, base of first gastric 

 segment and interrupted bands at the apices of the first and second 

 segments which are yellow. Apex of femora, tibia? and tarsi slightly 

 infuscated. Pile gray. 



Female. Length 8 mm. 



Head elongate oval, distinctly longer than broad, in general similar 

 to that of the worker. Ocelli large and distinct, arranged in a tri- 

 angle. Mesonotum flat behind, the sides with a low, rounded margin. 

 Scutellum flat. Epinotum similar to that of the worker, but the base 

 is much shorter in proportion to the declivity, slightly longer than 

 broad. Petiole as in worker. Gaster longer and more slender. 



Head and pronotum with foveate punctation, the punctures shallow 

 and widely separated. 



The color is the same as in the worker, except for the mandibles and 

 a transverse stripe across the clypeus, which are rufous. The tibiae, 

 tarsi, and tips of the femora are darker than in the worker. Wings 

 very slightly infuscated, veins pale brown. Pilosity as in worker. 



Described from large series of workers from Para and Abuna. 

 This is a singularly colored variety, quite different from any of the 

 described forms. In the Para specimens the surface of the epinotal 

 declivity is yellow, and in those from Abuna it is black. Otherwise 

 the two are identical. 



