480 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
210. Camponotus (Myrmobrachys) adpressisetosus Forel. 
Plate 6, fig. 48. 
Worker major. (Plate 6, fig. 48). Length 9 mm. 
Head, excluding mandibles, longer than broad, with narrowly 
rounded occipital corners and concave border; sides nearly straight 
and subparallel for half their distance from occiput to anterior border, 
then convex and convergent. Clypeus longer than broad, strongly 
keeled at middle, the sides straight and parallel; anterior border 
broadly concave at middle. Frontal area distinct, elongate, triangu- 
lar. Frontal carinae extending to nearly opposite the posterior borders 
of eyes. Eyes small, very flat, located in front of sides behind the 
middle. Mandibles 4-dentate. Antennae short, slender, the scapes 
curved, extending three fourths the distance to occipital angles, funi- 
cular joints cylindrical, joints 2-10 subequal. Pronotum transverse, 
sides evenly rounded, surface slightly convex. Mesonotum flat above, 
a little broader than long, evenly rounded at sides. Mesoépinotal 
suture faintly impressed. Epinotum from above three times as long 
as broad; evenly rounded above and at sides, without distinct base 
and declivity. Petiolar node twice as high as thick, rounded in front, 
nearly straight behind, above narrowly rounded. Gaster short and 
stout, oval. Legs long, tibiae moderately depressed. 
Subopaque, very finely shagreened throughout, with a covering of 
fine silky pubescence, which is a little more abundant on the gaster 
and thorax than on the head. The head bears short, stiff suberect 
hairs, in addition to much longer erect hairs. The latter are present 
also on the thorax and gaster, where they form a long brush on the 
epinotum and the apex of node. Antennae without pubescence or 
pile. Mandibles subshining, finely punctate, with sparse, short hairs. 
Legs with sparse, fine recumbent hairs; without erect hairs. 
Color black; antennae and mandibles brown, recumbent pile and 
pubescence golden. 
Worker minor. Length 7 mm. } 
Head, excluding mandibles, longer than broad, narrowed in front, 
with slightly convex sides, broadly rounded posterior corners and 
straight occipital border. Clypeus as broad as long, strongly keeled 
at middle. Mandibles 7-dentate. Antennal scapes extending half 
their length past the occipital corners. Eyes large, moderately convex, 
located at posterior third of head. Thorax much as in major worker, 
but the mesoépinotal suture less impressed. ‘Rest as in worker major. 
