226 
Psyche 
[September 
series of 3 subequal denticles about 0.0 1 mm high, and a main series 
of 5 strong, acute teeth of the type normally seen in Codiomyrmex. 
Of the latter, the 3rd is largest (c. 0.06 mm high), 2nd and 4th 
slightly smaller, 1st and 5th smallest (c. 0.05 and 0.04 mm high, 
respectively). Apices of large teeth, especially the 5th, inclined 
posteriorly. Denticles of apical series mounted on a process about 
0.04 mm high and slightly wider at base, so that their apices are 
aligned with those of the major teeth. Basal lamella arising imme- 
diately behind posterior tooth, partly obscured by clypeus, apparently 
triangular. Labrum transverse, distal border strongly biconvex with 
a deep, acute median cleft. 
Mesosomal profile as in Figure 1 ; dorsum transversely flat to feebly 
concave, lateral margins defined by a fine carina. Sides almost with- 
out sutures except the pro-mesonotal. Pronotum transversely mar- 
ginate in front; 0.57 X as wide as head, 2.15 X as wide as propo- 
deum. Humeral angles each with a low papilliform elevation. Pro- 
mesonotal suture lacking on mesosomal dorsum, mesonotum and pro- 
podeum separated by a fine transverse carina. Propodeal declivity 
strongly concave; teeth only slightly divergent, their tips minutely 
hooked upwards; infradental lamellae weak; spiracles simple, un- 
flanged. Petiolar profile as in Figure 1 ; peduncle with a pair of 
fine dorsolateral longitudinal carinae ; node rising to a narrow 
transverse crest, its dorsum feebly convex in posterior view. Post- 
petiolar disc elliptical, almost twice as wide as long. First gastric 
segment 0.85 X as broad as long, 1.2 X as broad as deep; sides 
submarginate basally ; basigastric costulae distinct, crowded, evenly 
developed, extending back to mid-length of segment. Usual comple- 
ment of areolate spongiform material on petiole and postpetiole; 
posterodorsal bridges of both segments reduced to fine carina-like 
vestiges; anteroventral pad lacking on gaster. 
Mandibles shining, with a few scattered punctures; scapes finely 
shagreened. Clypeus and anterior part of frons shining; remaining 
cephalic dorsum and antennal scrohes less lucid, with coarse granular 
shagreening. Mesosomal dorsum moderately shining, with effaced 
shagreening overlain by vestigial fine longitudinal costulae on pro- 
mesonotum, several median costulae moderately distinct. Sides of 
mesosoma smooth to coarsely shagreened, generally shining, especially 
on pronotum and propodeum. Propodeal declivity strongly shining. 
Petiolar peduncle finely shagreened, node more coarsely so, its dorsum 
with 2 fine longitudinal costulae near midline. Postpetiole finely longi- 
tudinally costulate. First gastric tergum, behind basigastric costulae, 
with a finely etched reticulate microsculpture. Legs shagreened. 
