1954] 
Broivn — Indo-Australian Strumigenys 
69 
the midlength on the dorsal sides of the ventral scrobe 
borders, fairly well developed, but not visible from direct 
dorsal view. A feeble vertical groove in front of the eye 
terminates the preocular lamina on each side, but does not 
Figure 1. Strumigenys chapmani new species, paratype worker, dorsal 
view of head, showing pilosity of outline only. Teeth on ventral side 
of mandibular apex omitted. (F. Y. Cheng). 
interrupt the rearward extension of the scrobe itself and 
does not induce any excision or concavity of the dorsal 
scrobe border directly above. 
Ventral surface of head just behind the eyes with a 
broad, deep, arcuate transverse postoral groove or sulcus; 
behind this, the ventral surface of the occipital lobes are 
convex. Preocular laminae subparallel, continuing the lat- 
eral clypeal borders posteriad. Clypeus nearly half again 
as broad as long, broadly subpentagonal, feebly convex 
over the mandibular insertions and posteromedially ; an- 
terior border nearly straight, but strongly impressed in 
the center. 
Mandibles short, stout, depressed, dorsally tilted and 
very feebly arched as seen from the side, approximately 
parallel at full closure; inner margins with cultrate trans- 
lucent borders reaching from near bases to beginning of 
subapical narrowed portions. Apex of mandible bearing 
a long, straight, slender dorsal tooth (length 0.11-0.12 mm.) 
which I interpret as a secondarily migrated preapical 
tooth that has assumed an apparent apical position. Ven- 
