232 
Psyche 
[December 
4) ; labrum concealed by the clypeus except for some of its long 
apical setae, when dissected away found to be very short, semicir- 
cular (Fig. 5). Clypeus broad, weakly rounded apically, its median 
area rather flat, but the sides deeply hollowed out for the reception of 
the scape; apical margin, opposite the antennal insertions, with a 
pair of tufts of matted setae (Fig. 2) ; front weakly, evenly convex, 
strongly shining, without punctures or setae, distance between eyes 
measuring 2.6 X eye height; distance from eye tops to vertex crest 
much exceeding eye height, the vertex very broadly rounded, slightly 
concave at the midline, the crest rather sharp. Antennae with 13 
well-defined segments, arising from simple orbits; middle segments 
weakly serrate; segments 2-9 each with one or more fairly prom- 
inent setae, segments 6-13 with a variety of prominent sensory pores 
and spicules (Figs. 2, 3). 
Thorax and propodeum also strongly polished and virtually with- 
out surface sculpturing, with a few pale setae arising from con- 
stricted portions such as the neck region, the thoracic-propodeal 
junction, and the propodeal-metasomal junction ; greatest width of 
thorax (across the mesothorax) subequal to width of head; prono- 
tum fairly long, its posterior margin arcuate, with weakly developed, 
slightly rounded posterior lobes; proepisterna unusually large and 
convex, roughened ventrally with small, wart-like protuberances, 
the midventral line of the prothorax indistinctly sulcate; prosternum 
small, poorly differentiated; base of front coxa with a partially sep- 
arated sclerite which may represent the proepimeron ( Fig. 1 1 ) . 
Mesothorax broad, smooth, with no separation whatever into 
scutum, scutellum, or pleura; metathorax apparently absent, the hind 
legs appearing to rise from the propodeum close to the articulation 
of the metasoma; propodeum narrowly connected to thorax, de- 
pressed, its contours very smooth. Coxae large, conical, all three 
pairs contiguous medially and also capable of overlapping when the 
legs are pressed against the body; front coxae terminating in a 
flattened process which extends beyond the origin of the trochanters; 
hind femora incrassate, front femora more weakly so; all tibiae 
spinose as figured; tibial spurs 1-2-2, the spur of the front tibia not 
forming a well defined antennal cleaner; front tarsus with a pecten 
of short, stout spines (Fig. 8), other tarsi very slender, rather bristly 
at the joints; claws simple, arolia fairly large. 
Metasoma broad, attached to propodeum by a petiole which is no 
longer than broad ; first tergite short, its posterior margin arched ; 
first sternite short, broadened slightly behind the petiole but ap- 
parently broadly overlapped by the large second sternite. Sixth 
