The Ants of the Baltic Amber. 



61 



but the long epinotal spines are more erect and diverging, the 

 njetasternal angles are very prominent, acute and upturned, and 

 tiiere are no traces of spurs on the middle and hind tibia*. The specimen 

 marked B 18 981 is in the same block of amber with a worker of 

 Iridomyrmex gcepperti, which has died with its mandibles seizing the 

 tip of the right antenna of the KotJio}nyr)iiica. 



Nothotnyt'tnica intermedia, sp. nov 



Worker. Length 4,7 mm. 



Closely resembling X. rudis and almost 

 intermediate between this form and 2ly)imca 

 longispinosa in many particulars. The eyes are 

 smaller and much more convex, the epinotal 

 spines somewhat more horizontal, though di- 

 verging, and more slender and sinuate, and 

 the metasternal angles are smaller and more 

 acute than in rudis, while the reticulate ru- 

 gosity of the head and thorax is less coarse 

 and more like that of M. longisjnnosa. There 

 are no spurs on the middle and hind tibia?. 

 This is the only character that excludes the 

 species from the genus Mynnica. The hairs 

 covering the body are more delicate and less 

 erect than in ^". rudis and quite abundant on 

 all parts of the body and on the appendages. 

 The color is black. 



Described from a single well-preserved 

 specimen in the Geolog. Inst. Koenigsberg Coll. 



(Fig. 24.) 



Fig. 24. 



Nothomyrtuica intennedia, 



sp. nov. Worker. 



J^othomyrmica riigososti^ata (Mayr). (Fig. 25 ) 



Micromlsclia ruyosoxb-iain Mayr, Beitr. Naturk. Preu.ss. I, 1SG8, p. 84, Taf. IV, 

 Fig. 83, $; Dalla Toruk. Catalog. Hymen. VII, 1893, p. 120; Hand- 

 LIRSCH, Foss. lusekt. 1008, p. 876. 



Mayr described this species from two specimens. It may be 

 readily distinguished from K. rudis by its somewhat smaller size 

 (about 4 mm), its shorter, blunter epinotal spines, which are directed 

 backward and not upward, and its sculpture; the head, thorax, petiole 

 and postpetiole being longitudinally and less coarsely rugose. The 

 metasternal angles are blunt. The middle and hind tibiiu lack spurs. 



