52 
Psyche 
[March 
which in the normal worker and even in the female are 
much shorter and telescoped into one another. Anteroven- 
tral projection of the postpetiole less developed than in the 
normal worker and female; legs as long as those of the 
former. 
Sculpture peculiar; the longitudinal rugae on the front 
and vertex decidedly less coarse, denser and more numer- 
ous than in the normal worker, with the reticulate rugae 
between the front and eyes also much finer ; rugules on the 
median portion of the clypeus more numerous ; striae on the 
mandibles somewhat coarser. On the thorax the rugae are 
distinctly finer and more definitely transverse ; those on the 
posterior portion of the pronotum also transverse, not 
coarse and irregular as in the normal worker. The rugae on 
the petiolar node are finer and symmetrical. On the post- 
petiole and gaster the sculpture is quite unlike that of E. 
tuberculatum and much like that of E. quadridens Fabr., 
the tergites of all the segments being finely and regularly 
striate, so that the surface is subopaque, with a faint satiny 
lustre. The striae on the postpetiole are arcuate anteriorly, 
longitudinal in the middle and transverse posteriorly; on 
the first gastric segment longitudinal anteriorly and trans- 
verse behind; on the second and third gastric segments 
transverse and more oblique on the sides. The fourth seg- 
ment is more shining, with finer and less distinct striae. 
The coarse punctures on the postpetiole and first gastric 
segment are small, inconspicuous and scattered, as in E. 
quadridens and therefore very different from those of punc- 
tigerum or the typical tubercidatum. 
Pilosity as in the normal punctigerum worker, but less 
abundant, especially on the abdomen. 
Coloration decidedly darker ; dark brown, almost black- 
ish, w T ith brownish yellow clypeus and mandibles, the 
former streaked with fuscous in the middle, the latter fus- 
cous externally. Femora, terminal tarsal joints, tips of 
scapes, apical halves of antennal funiculi and borders of 
gastric segments reddish brown; a spot on the middorsal 
region of the postpetiole and one on the corresponding re- 
gion of the first gastric-segment more yellowish. 
The specimens described in the preceding paragraphs are 
obviously modified workers, without any perceptible female 
