114 
Psyche 
[December 
origin. As elsewhere in the East Indies, species endemism 
is high. 
Strumigenys esrossi, new species 
Holotype worker: tl 2.4, hl 0.62, ML 0.28, WL 0.60; Cl 72, 
Mi 45. 
Head and mandibles in general form much like those of 
godeffroyi ; the occipital lobes with a feeble indication of 
dorsal depression and another extremely feeble depression 
in the center of the cephalic dorsum at eye level. Mandibles 
only very feebly arcuate; dorsal tooth of apical fork nearly 
twice as long as the ventral ; the latter parallel and with two 
small acute intercalary denticles on its inner margin. Pre- 
apical spiniform tooth distant by about l 1 /^ times its own 
length, situated at approximately the apical third of the 
length of the shaft, a little more than half as long as the 
dorsal apical tooth. Alitrunk slender, pronotum depressed, 
forming a nearly straight gentle slope in profile, continu- 
ous with the anterior mesonotum; posterior mesonotum 
rather strongly and broadly concave, continuous with the 
very feebly convex propodeal dorsum; metanotal groove ab- 
sent. Propodeal teeth spiniform, but enveloped in infra- 
dental lamella, which is acute at their tips and broad and 
weakly convex below; spongiform tissue not or extremely 
slightly developed on the lateral faces of the lamellae. Petio- 
lar node long and low, gently rounded above and with a 
gentle anterior slope. Spongiform tissue reduced to moder- 
ate posterolateral flaps and a strong mid-ventral band. 
Postpetiole moderate in size, nearly twice as broad as 
petiolar node, convex, finely and densely striolate-punctu- 
late longitudinally, opaque. Anterolateral spongiform ap- 
pendages less well developed than in godeffroyi. Basigas- 
tric costulae a broad band of extremely fine, dense longi- 
tudinal striolation extending about half the length of the 
basal tergite, and behind this extending briefly as indefi- 
nite traces, although the surface here is generally smooth 
and shining. Mandibles fairly smooth, shining. Rest of 
body densely punctulate and opaque, including sides of 
alitrunk. 
Pilosity consisting, except for a few short clavate hairs 
