108 
Psyche 
[March 
eter of eyes; hairs on scapes and legs evenly scattered, absent on 
mesial surface of fore femora, somewhat shorter than those of body, 
mostly oblique; funicular segments with very short and scattered 
standing hairs. Fine appressed pubescence on mandibles, antennae, 
sides and gular face of head, sides of pronotum, legs and gaster. 
Head as shown in fig. 1 . Mandibles with the infero-lateral border 
carinate, the chewing blade with 6 teeth, the basal tooth small, off- 
set or retracted. Median apron of clypeus gently convex in both 
directions, with a weak sagittal carina which on the posterior fourth 
becomes an impressed sulcus. Frontal sulcus faint, fading out be- 
fore the posterior end of frontal carinae. Antennal scapes feebly 
compressed and prismatic at basal half. Second funicular segment 
shorter than first and third. Eyes rather flat. Antennal socket re- 
moved from posterior corner of median apron of clypeus by a dis- 
tance which slightly exceeds its own diameter. Thorax as shown in 
Fig. 2. Mesothoracic spiracle protuberant. Metanotum dorsally 
exposed, projecting as a transverse welt. In profile, the depression 
in front of metanotum and on anterior third of basal face of prono- 
tum is very shallow. Tibiae and first tarsomeres not conspicuously 
compressed nor broadened. Petiole. (Fig. 2) with the peak trans- 
versely submarginate. 
Worker. Measurements in mm: TL 8.9-9.0; HL 2.10-2.15; HW 
1.33-1.38; IFW 0.54; EyL 0.46; ScL 2.67; WL 3.29; HFL 3.08-3.23. 
Color and sculpture as in soldier, but nearly the entire mandibles, 
the gular surface of head, the drawn-out and necklike occiput, and 
the fore legs are smooth and shining throughout; reticulate-punc- 
tate sculpture on anterior part of dorsum of head more superficial. 
Pilosity likewise as in soldier, except for the presence of fringing 
erect hairs on sides of head; hairs on scapes more abundant and 
more erect; erect hairs present on median stripe of clypeus. 
Head as shown in Fig. 3; note the parallel-sided head, slightly 
constricted in front of convex and protruding compound eyes, and 
the long, narrow, stalked occiput which is drawn-out in a necklike 
fashion. Antennal socket removed from posterior corner of median 
apron of clypeus by a distance which is subequal to its own diameter. 
Sagittal carina present on clypeus, posteriorly blunt and low, but 
not impressed as a sulcus. Thorax as in soldier (Fig. 4) but more 
slender and strongly constricted at level of mesothorax. Both the 
mesonotum and the anterior third of propodeum have a distinct, 
saddle-shaped impression. Mesepisternum terminating above in 
