■)4 



William Morton Wheeler 



the latter in form, size and sculpture, but the epinotal spines are 



somewhat more erect, the head is more slender, with less prominent 



posterior corners and the scapes 

 and funicular joints of the antenna 

 seem to be more slender. The head 

 behind is not as smooth as in 

 A. suhterranea, but covered with a 

 wide mesh-work of rug*. 



I have seen 14 workers of this 

 species from the Geolog. Inst. 

 Koenigsberg Coll., namely: No. 

 377/7663 and 606/10092 (Mayr's 

 types), B 19363, B 245, B 18 727, 



Fig. 18. Aph(Bnognsli'rso)nmerfeldtiMA.Y^. B 18 863, III B 249, B 250, XX 

 Worker, K 4840. B921, B239, B 18590, XllI 



B 305, XXB 921, XB 557, one 



without a number, and three from the Klebs Coll., namely, K 36, 



K 3533 and K 4840. 



Aphcenoff aster oliifocenica, sp. nov. 



Worker (Fig. 19). Length about 4,5 mm. 



Closely resembling the preceding but differing in sculpture and 



in the armature of the epinotum. The latter is provided with two 



blunt projections instead of teeth, the epinotal declivity is sloping and 



the mesonotum is not raised in front in the 

 form of a slight abrupt convexity as in 

 sommerfeldti and many of the recent forms. 

 The head is coarsely rugose, the rugae being 

 more parallel in front of and more reticulate 

 behind the eyes. The longitudinal rugae on 

 the sides of the thorax, especially on the 

 epinotum, are strong and further apart. The 

 nodes of the petiole and postpetiole seem to 

 be lower than in sommerfeldti. The gaster 

 is rather large. The legs are long and slender. 

 Color and pilosity much, as in sommerfeldti. 

 Described from a single specimen (B 5461) in the Geolog. Inst. 

 Koenigsberg Coll, Though the amber is much cracked this specimen 

 is well-preserved and most of its characters are clearly visible. Another 

 specimen, B 18 570, probably belongs to this species but is too densely 

 enveloped in a white film to be identified with certainty. 



Fig. 19. 

 Aphaenogaster oligocenica, sp.nov 

 Worker, B 5461. 



