MANN: THE ANTS OF BRAZIL. 411 
26. Neoponera (Neoponera) latreillei Forel. 
Para, Porto Velho, and Camps 39, 41, Madeira-Mamoré R. R. 8 
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 Parad, was 
nesting beneath a banana stalk in a dense thicket. The ants were 
very timid and ran away quickly, but returned one by one to carry 
off their brood. 
27. Neoponera (Neoponera) unidentata (Mayr). 
Parad, Manaos, Porto Velho, and Camps 39, 41 Madeira-Mamoré 
RR eve 
28. Neoponera (Neoponera) bakeri, 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. Mesoépinotal 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 
