134 



William Morton Wheeler 



the head ; all the funicular joints longer than broad, gradually decreas- 

 ing in length to the tip, except the last joint, which is as long as 

 the two preceding together. Thorax hour-glass-shaped, deeply con- 

 stricted 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. Gaster 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. 



Color 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, B5619. 



