MANN: THE ANTS OF BRAZIL, 411 



26. Neoponera (Neoponera) latreillei Forel. 



Para, Porto Velho, and Camps 39, 41, Madeira-Mamore R. R. y 

 The large size and active movements, with the contrast in color 



between the black body and yellow tipped antennae make N. latreillei 



one of the most conspicuous ants in the forest. 



A small colony, of perhaps thirty individuals, found at Para, was 



nesting beneath a banana stalk in a dense thicket. The ants were 



very timid and ran away cjuickly, but returned one by one to carry 



off their brood. 



27. Neoponera {Neoponera) unidentata (Mayr). 



Para, Manaos, Porto Velho, and Camps 39, 41 Madeira-Mamore 

 R. R. y 9 



28. Neoponera (Neoponera) hakeri, sp. nov. 

 Plate 1, fig. 9. 



Worker. (Plate 1, fig. 9). Length 8 mm. Near N. unidentata 

 (Mayr) . Head, excluding mandibles, longer than broad, subquadrate , 

 sides feebly convex, posterior angles obtuse; occiput concave; carina 

 on cheek strong; clypeus at middle prolonged into a sharp point, con- 

 cave at sides. Mandibles rather thick, triangular, with twelve small 

 teeth, the apical and two subapical larger than the others and subequal. 

 Eyes convex, a little in front of the middle of head. Antennal scapes 

 extending three eighths their length beyond the occipital corners; 

 apical joint of flagellum nearly twice as long as penultimate. Thorax, 

 seen in profile, moderately convex. Pronotum convex, strongly 

 margined at sides, the margin indistinctly serrate. Mesonotum nearly 

 circular, disc-like. Mesoepinotal impression shallow, but distinct. 

 Metanotum convex basally; declivity gradual, the surface nearly (flat, 

 on either side with a prominent marginal carina on which are three 

 distinct triangular teeth. Node highest in front; anterior surface 

 straight to apex; posterior surface, seen in profile, strongly convex, 

 base slightly concave, margined at sides, margin with three to five 

 distinct teeth. Gaster as long as thorax and head excluding mandibles. 



Head coarsely, longitudinally striate, the striae irregular and 

 wavy; mandibles sublucid, smooth. Pronotum more finely trans- 

 versely striate. Striae of meso- and epinotum coarse, on mesonotum 



