44 
Psyche 
[February 
delicate and pointed than in the female and worker. Wings 
slightly paler than in the female. 
Eleven workers, two females and four males from a single 
colony. 
Aphaenogaster ( Attomyrma ) gatesi sp. nov. 
Worker. Length nearly 4 mm. 
Head subrectangular, fully as broad as long, a little broader 
behind than in front, with straight, transverse posterior border 
and evenly rounded sides. Mandibles large, rather flat, with 
scarcely concave external borders, the teeth, except the apical, 
small, numerous and irregular. Clypeus broad, somewhat de- 
pressed anteriorly, the border entire, broadly and evenly rounded. 
Frontal area large, distinct and triangular. Frontal carinse sub- 
parallel, nearly as far apart as their distance from the sides of 
the head. Eyes rather small, at the middle of the sides of the 
head. Antennae moderately stout, scapes slightly flattened at 
the base, extending nearly half their length beyond the posterior 
corners of the head; funiculi with distinctly 4-jointed club; 
joints 2-7 subequal, about times as long as broad, basal joint 
nearly twice as long as broad. Thorax moderately stout but 
much narrower than the head, broadest through the pronotum 
which is subhemisperical, as broad as long. Promesonotal suture 
distinct and somewhat impressed; mesonotum narrow, sloping, 
with an abrupt angular projection on the middle and a lower 
angular projection at its posterior end near the mesoepinotal 
suture. Mesoepinotal constriction pronounced; base of epino- 
tum straight and horizontal in profile, from above with a median 
longitudinal impression; declivity sloping, somewhat shorter 
than the base from which it is separated by a pair of small erect 
teeth which are as broad at the base as long. Petiole narrow, 
about twice as long as broad, laterally compressed, violin-shaped 
from above; the node rather small and conical. Postpetiole 
fully three times as broad as the petiole, as broad as long, broader 
behind than in front, the node in profile low and rounded, not as 
high as the petiolar node. Legs moderately long, femora dis- 
tinctly thickened in the middle. 
