134 
William Morton Wheeler 
the head ; all tlie funicular joints longer than broad, gradually decreas- 
mg 
the two 
stricted 
in length to the tip, escept the last joint, which is as long as 
preceding together. Thorax hour-glass-shaped, deeply con- 
in the mesoepinotal region; broadest through the pronotum, 
which is convex and 
rounded above. Meso- 
notum rather small, 
elliptical, longer than 
broad, in profile rising 
a little above the pro- 
notum in front and 
sloping backwards. 
Metathoracic spiracles 
prominent, closely ap- 
proximated dorsally in 
the mesoepinotal con- 
cavity. Epinotum with 
subequal base and 
declivity, both convex 
and meeting at a blunt 
but distinct angle. 
Petiole short, its node 
high, erect, anteropos- 
teriorly compressed, 
higher than broad 
and somewhat broader 
above than below, with entire or feebly notched and broadly rounded 
superior border, which, seen in profile, is rather blunt, with convex 
anterior and flat posterior surface. Graster large, elliptical, convex above, 
the base of the first segment truncated in front where it is applied to the 
posterior surface or the petiolar scale. Legs rather long and slender. 
Body shining, sparsely and coarsely punctate; mandibles opaque, 
coarsely striatopunctate. 
Whole body, including the scapes and legs, covered with numerous, 
erect, stiff, rather long and pointed hairs; antennal funiculi with shorter 
acd more reclinate hairs. 
Oolor light or dark resin-brown; black, in more decomposed 
specimens; the integument often peculiarly translucent. 
Worker minor (Fig. 64a). Length 3 — 4,5 mm. 
Differing from the major worker as follows : Head smaller, but 
little broader than the thorax, longer than broad, but little broader 
Fig. 64. Pseudolasius boreus sp. nov. 
a) Minor Worker, B 19742; b) major worker, B 5619. 
