414 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
33. Neoponera (Neoponera) cavinodis, sp. nov. 
Plate 2, fig. 14. 
Worker. (Plate 2, fig. 14). Length 10 mm. 
Near N. luteola (Roger). Head, excluding mandibles, longer than 
broad; sides convex, base slightly concave, posterior angles rounded; 
clypeus extended at middle into a tnangular projection, the sides 
arcuately impressed. Mandibles elongate, acute at apex, with twelve 
teeth, the basal of which are small and those apically larger; the apical 
tooth is long and pointed, attached at base to this is a smaller sharp 
tooth, about half as long, and basal to this another, slightly longer 
and more acute than the subapical. Eyes convex, situated a little 
in front of middle of head. Scape of antenna extending three eighths 
its length past occiput; joints 1-10 of flagellum subequal in length, 
gradually thicker towards the apex; apical joint 13 times length of 
penultimate. Pronotum slightly convex, sides feebly margined, 
forming an angle with the nearly flat pleurae; disc at middle with a 
shallow, but distinct longitudinal impression. Mesoépinotum in 
profile very slightly convex, rounded at sides posteriorly, and in back, 
the mesoépinotal suture scarcely distinguishable: declivity of epino- 
tum rather flat, with feeble margin at sides; above forming a rounded 
angle with the basal portion; seen from behind spear-shaped, the apex 
with a short longitudinal impression. Petiole higher than thorax, 
anterior surface evenly rounded to apex, the middle of base very 
slightly convex; apex projecting backward over the posterior surface; 
posterior surface receding anteriorly, concave above, slightly convex 
below. Gaster as long as head and thorax. 
Mandibles subshining, with scattered, coarse punctures. Head sub- 
opaque, very finely transversely striate and with minute punctures. 
Thorax and anterior surface of petiolar node sublucid, finely punctate 
and delicately reticulate. Gaster finely punctate. Legsshining. Head 
and thorax with fine pubescence and long scattered pile. Clypeus with 
several long hairs. Anterior surface of node with appressed pubes- 
cence, the posterior surface glabrous. Gaster thickly pubescent and 
with long scattered hairs. Femora and tibiae with suberect hairs. 
Color brown, head and gaster darker than the thorax. Legs yellow. 
Pile and pubescence pale yellow. 
Described from a worker taken at Porto Velho. 
In general appearance JN. cavinodis resembles N. crenata but is much 
larger and the node is entirely different. 
