1940] 
Rare Ponerine Genera 
81 
than broad, broadest back of eyes, occipital margin straight 
or faintly concave, occipital corners rounded, head in side 
view with the posterior ventral angle of occiput produced 
as a distinct carinate lobe on each side of a short thoracic 
neck; anterior clypeal margin truncate, eyes moderately 
large, convex; frontal lobes large and convex, feebly angu- 
late behind, extending to anterior clypeal margin when 
viewed from in front, and to a level posteriorly with the 
anterior one-fifth of the eyes; between the lobes is a deep, 
roughly circular impression ; antennal scrobes laterally with 
a low but acute carina ; antennal scapes slightly surpassing 
occipital margin, terminal funicular joint slightly longer 
than the preceding three taken together ; mandibles coarsely 
striate, with six or seven acute teeth and a long, acute apical 
tooth. Thorax in profile flat, with evenly convex anterior 
pronotal margin descending to a sharply delimited collar 
mostly hidden by the posterior occipital tubercles; inferior 
humeral angles acute but rounded apically ; epinotal declivity 
faintly concave, interrupted above the middle by a large, 
protuberant spiracle on each side. Petiole in side view 
convex above, concave below, distinctly higher than long, 
from above a little longer than broad with posterior margin 
convex. First gastric segment from above broader than 
long ; second segment much larger, with remaining segments 
directed anteriorly. Legs of moderate proportions. 
Opaque, body coarsely sculptured, head reticulate — ver- 
miculate with depressions finely punctate, thorax irregularly 
vermiculate with the vermiculations above tending to run 
longitudinally; petiole coarsely reticulate, finely punctate in 
impressions, gaster reticulate, the reticulations becoming 
feeble posteriorly; appendages finely punctate, tibiae finely 
striate. 
Pilosity of moderately abundant, upright yellowish hairs. 
Dark, reddish-brown, appendages paler. 
Worker. Length 2.8 mm. (thorax, including a slight col- 
lar, 1.2 mm.). Similar to the female with the usual sexual 
differences. The mandibles are as completely, though less 
coarsely, striate, the antennal scapes surpass the occiput. 
The thorax is without trace of sutures dorsally and the 
epinotal declivity bears two protuberant spiracles much 
higher than in A. simulans. The petiole is convex above, 
