82 ARKIV FÖR ZOOLOGI. BAND 12. N:0 15. 



yellow median longitudinal patch; of clypeus there is only a 

 little narrow and short part visible, which being emarginate 

 in the middle of tho anterior margin gives the impression of 

 being bilobated, with two stiff erect hairs in the middle; 

 labrum small, narrow at the base, swelling out to the tip; 

 jaws very short, curved inwards, very broad at the base, 

 with a very obtuse median tooth near the middle; antennse 

 light yellow, basal joint twice as long and twice as broad 

 as the 2nd, 3rd very short, only a third part in length 

 of the 2nd, and more or less completely coalescing with 

 4th, which is broader than 3rd and about half so long as 

 2nd, 5th slightly longer than 4th, 6th still a little longer, 

 joints 7th — 14th gradually longer, about 1 V2 ^s long as broad, 

 15th the longest, tapering to both ends; palpi long and 

 slender, much longer than the jaws. 



Measurements: Length of body with jaws 4,i mm, 

 length of head with jaws 1,6 5 mm, length of head without 

 jaws 1,44 mm, breadth of head 1,06 mm, length of prothorax 

 0,3 2 mm, breadth of prothorax 0,6 7 mm, breadth of abdomen 

 1,45 mm. 



Work er. Whitish with light yellowish head. 



Head with light median line, lighter in front, rounded 

 behind and at the sides, contracted near the root of antennse; 

 clypeus rounded at the sides, swelled, its apical part small, 

 produced at tip; labrum long and narrow, swelling out towards 

 the tip, which is rounded and slightly emarginate; jaws 

 small, the left with two apical strong teeth, a sharp ridge 

 and an angular projecting indentation, the right with two 

 large broad and lea-like apical teeth and a large rectan- 

 gular one further below, antennse l5-jointed, 3rd joint 

 smallest, partly coalescing with 4th, 5th shorter than 4th; 

 joints 6th — I3th longer than broad, the three last joints 

 the longest, 15th twice as long as broad, tapering on the 

 sides to the tip; prothorax small, ridged in front, meso- and 

 metathorax rounded at the sides; legs moderate; abdomen 

 elongate, whitish. 



Measurements: Length of body 4 mm, length of head 

 1,22 mm, breadth of head 1,0 6 mm, length of prothorax 

 0,32 mm, breadth of prothorax 0,72 mm, breadth of abdomen 

 1,39 mm. 



