928 ] 
A New Species of Probolomyrmex from Java 
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highest behind where it is concavely truncated; the dorsal surface 
convex, rising evenly to the posterior truncation, the ventral 
surface convex in the middle, at the anterior end with an acute 
tooth which is directed forward. Postpetiole strongly constricted 
off from the first gastric segment, one and one-fourth times as 
long as broad, narrowed anteriorly, evenly convex dorsally and 
laterally, its anteroventral protuberance rather sharply angular 
in profile. First gastric segment as long as the postpetiole, 
longer than broad. Sting very long and slender. Legs long. 
Nearly opaque throughout, legs scarcely more shining; very 
densely, finely and evenly punctate, the head and thorax some- 
what more distinctly. 
Hairless; pubescence white, extremely fine, forming a deli- 
cate bloom, most distinct on the thorax and abdomen. 
Clear ferruginous red, the head in some specimens a little paler 
than the thorax; anterior portion of head, clypeus, mandibles, 
antennae, legs and gaster beyond the first segment reddish yellow. 
Described from four specimens taken Dec. 18, 1922 by Dr. 
Karl Dammerman at Buitenzorg, Java. 
This species is smaller than P. filiformis , which measures 3 
mm.; its antennal funiculi are decidedly thicker, with broader 
joints, the epinotum is distinctly dentate and the ventral portion 
of the petiole has no lamella and its anterior tooth is directed 
forward instead of backward. The female P. boliviensis Mann 
resembles the Javan species in its smaller size (the female meas- 
ures only 2.8 mm.), in the shape of the antennal funiculi and the 
ventral portion of the petiole, but the dorsal portion of the latter 
is higher and has a very different outline in profile, the post- 
petiole is shorter than the first gastric segment and the color is 
more brownish red. This last character, however, may be 
peculiar to the female. 
