220 
Psyche 
[September-December 
The (probably) true propodeal declivity small, flat, steep, un- 
armed, bounded by an inverted U-shaped carina, flanked on each 
side by the large, circular openings of the propodeal spiracles, which 
are directed caudad. Inferior propodeal plates low and rounded. 
Petiole curved-clavate, with a long, subcylindrical anterior pe- 
duncle, a long, low, rounded node, and poorly-defined posterior 
peduncle, or collar. Postpetiole rounded above and on the sides, 
broader behind than in front, and about as broad as long; sternum 
boxlike, with inwardly sloping sides and a flat, subrectangular 
ventral face limited on all 4 sides by sharp carinae; broadly at- 
tached to gaster behind, but with a moderate constriction between 
the 2 tagmata. 
Gaster rounded at base to the basal constriction, which has a 
few short longitudinal costulae hidden within it. Basal segment 
extending over about 2/3 length of gaster, the remaining 3 visible 
segments curving to a pointed apex; terminal external (seventh) 
sternite (hypopygium) acutely pointed; sting with acute tip ex- 
serted, some of the rest of the shaft visible through transparent 
cuticle. 
Legs moderately long. Femur robust, its flexor surface sulcate 
apicad to receive the folded tibia; tibia claviform, thickest near 
apical third, lacking spurs on middle and hind legs; tarsus slender, 
cylindrical; claws small, slender, simple. 
Sculpture mostly shining; head both above and below (except 
clypeus and antennal scrobes) covered with a coarse reticulum of 
costulae forming large, shallow-polygonal fossae, each of which 
bears a long, fine, curved hair arising from an inconspicuous punc- 
ture, usually near the margin of the fossa. Similar sculpture on 
truncal dorsum, though here 10-11 longitudinal costae predomi- 
nate. A broad median strip is nearly smooth, forming a very shal- 
low median sulcus, which has a modest costa or carina in the 
middle. (The median posterior vertex is feebly subsulcate in much 
the same way.) Propodeum (sloping dorsum and declivity) nearly 
or quite smooth. Sides of trunk smooth and shining, but the pos- 
terior half with 5 strong costae radiating outward from the meso- 
pleural organ. Petiolar and postpetiolar nodes loosely longitudi- 
nally rugose, with broad, shining interspaces; peduncles and sides 
of these segments becoming finely and densely punctate-reticulate 
and more opaque; ventral rectangle of postpetiole smooth and 
shining. Gaster smooth and shining, except posterolateral margins 
