1957] 
Brown — Ant Genus Strumigenys 
113 
erect hairs; clypeal border hairs fine, subspatulate, incon- 
spicuous. Antennal scapes with short, fine subreclinate 
hairs, directed apicad. Alitrunk dorsum with pilosity like 
that of head, but considerably sparser; paired fine erect 
hairs on humeri and anteripr mesonotum. Nodes and gas- 
tric dorsum with a very few fine hairs slanting caudad. Few 
short subflagellate hairs at gastric apex. Underside of head 
and legs with moderately dense, fine, short reclinate pilo- 
sity. Color rather uniform light ferruginous yellow. 
Holotype a worker selected from a series of 41 workers 
and dealate females taken together with eggs, larvae and 
pupae in an “ant plant” at Camp of I/I/1939, Netherlands 
Indies- American New Guinea Expedition (Third Archbold 
Expedition) of 1938-1939, altitude 1800 M. (L. J. Toxopeus 
leg.). Deposited with paratypes in Zoologisch Museum en 
Laboratorium, Bogor, Indonesia. Some paratypes in MCZ 
and elsewhere. (See Archbold, Rand and Brass, 1942, Bull. 
Amer. Mus. Nat. Hist., 79 : 246-250, and Toxopeus, 1940, 
Treubia, 17 : 274, 278, for notes on type locality. 
Paratypes, 40 workers from type nest: tl 2. 6-2. 9, hl 
0.65-0.69, ML 0.33-0.35, WL 0.66-0.72; Cl 63-65, Ml 51. 
Varying slightly in shape and opposite-mandible symmetry 
of the welts on the inner mandibular borders. The propo- 
deal teeth also vary slightly in distinctness and acuteness, 
but still remain minute and denticuliform at best. 
Paratypes, 2 dealate females from type nest: tl 3. 3-3.3, 
HL 0.73-0.74, ML 0.36-0.36, WL 0.85-0.86; Cl 68-67, Ml 49- 
49, respectively. Showing the usual caste differences for the 
genus. Propodeal teeth low, subtriangular, but definitely 
dentiform. Mesonotum evenly punctulate, with a few fine, 
erect hairs. Infradental lamellae present as fine lines or low 
carinae. Side sclerites of alitrunk largely smooth and shin- 
ing, as is propodeal declivity ; dorsum of alitrunk complete- 
ly punctulate. Basal gastric costulae relatively stronger and 
longer than in worker. Color slightly darker and more 
brownish. (Male unknown.) 
Pupae: Mandibles open at more than 180° angle, as in 
szalayi group. 
This species appears to fall between the szalayi group and 
such godeffroyi group species as esrossi. It differs from all 
