The Ants of the Baltic Amber. 



99 



and of the same breadth, the mesonotum constricted and narrower, 

 except in the middorsal region at the anterior end where it is convex. 

 Metathoracic spiracles near the posterior end of the mesonotum, 

 approximated in the dorsal concavity. Petiole much longer than broad, 

 pedunculate in front, with a small node near its posterior end, lower 

 than the length of the segment. Gaster rather large, elliptical. Sting 

 not visible. Middle and hind tibiae with well-developed pectinated 

 main spurs in addition to short simple accessory spurs. Claws simple. 



Pityoniyrmex tornquistif sp. nov. 



Worker (Fig. 48). Length about 5,5 mm. 



Denticles on apical mandibular border about 20. Antennal scapes 

 reaching far beyond the posterior border of the head; first funicular 

 joint shorter than the second, 

 about 1^/2 times as long as 

 broad; remaining joints except 

 the terminal of one of the an- 

 tennse wanting. Thorax some- 

 what narrower than the head. 

 Petiole seen from above fully 

 3 'times as long as broad, gra- 

 dually increasing in breadth 

 posteriorly, border of node trans- 

 verse, rather sharp. 



Body smooth, apparently 

 very finely shagreened. 



Erect hairs very sparse, 

 visible only on the head and 

 gaster. 



Mandibles with numerous 

 coarse hairs on their borders 

 and dorsal surface. 



Color brown, with golden 

 reflections. 



Described from a single 

 specimen, without a number, 

 in the Geolog. Inst. Koenigsberg 

 Coll. This specimen is in a rather 

 unfavorable position in a block 



of amber embedded in balsam in a glass cell and the head, 

 gaster and much of the ventral surface of the insect are covered 



7* 



k 



Fig. 48. Pityomynne.r tornquisti »p. nov, 



a) Worker, SB 195, from above; 



b) head of same from the front. 



