Wierd HUG 12 10) WHEELER—GALAPAGOS ISLANDS ANTS 289 
the hairs and pubescence; the punctures on the sides of the 
thorax somewhat coarser than those on the dorsum. 
Hairs short, erect, glistening, pale yellow, rather obtuse, 
sparse on the head, thorax and border of the petiole, more 
abundant on the gaster, absent on the cheeks. Pubescence 
short, appressed and sparse, but easily visible on the sides of 
the head, dorsum of pronotum and on the legs, especially on 
the tibize, on the gaster much denser and longer, so that it hides 
the sculpture and produces a silky or bronzy gray reflection. 
Black; mandibles, except the teeth, front of clypeus, cheeks 
and sometimes the sides of the head, including the posterior 
corners, anterior portions of frontal carinz, antennz, legs, 
including the coxe, rich ferruginous red; venter dark brown. 
Worker minor. Length 3.5—4.5 mm. 
Resembling the worker major, but the head smaller and 
proportionally longer, with more rounded posterior corners, 
the clypeus feebly carinate behind, the eyes situated a distance 
about equal to their length from the posterior corners. An- 
tennal scapes much more slender, reaching about one-half 
their length beyond the occipital border of the head. Thoracic 
sutures less deeply impressed, the base of the epinotum more 
concave and the ridge separating the base from the declivity 
more pronounced and somewhat more distinctly bidentate. 
Sculpture, pilosity and color practically the same as in the 
worker major. 
Female. Length 8.5—9 mm. 
Head smaller and narrower than in the worker major, the 
sides and posterior border straight, the antennal scapes less flat- 
tened. Thorax rather long, elliptical from above, a little 
broader than the head; epinotum with convex, rounded base 
passing gradually into the longer, sloping declivity. Superior 
border of the petiole distinctly emarginate in the middle. 
Sculpture of the head resembling that of the worker major 
but the remainder of the body is more shining owing to its 
much finer and more superficial puncturation. 
Pilosity like that of the worker, but the shining appressed 
pubescence on the gaster is distinctly shorter and sparser so 
that the black surface is more apparent and much more 
shining. 
