The Ants of the Baltic Amber. 101 



Flaffiolepis klinsnianni Mayr. 



Plagiolepis Klinsmanni Mayk, Bcitr. Naturk. Preuss. I, 1868, p. 37, Taf. I, Figs. 19, 20, $. 



P. klinsmanni Dalla Torre, Catalog. Hymen. VII, 1893, p. 172; Ern. Andrk. Bull. 



Soc. Zool. France, XX, 1895, p. 82; Handlirsch, Foi=P. inr,ekt. 1908, p. 859. 



This is by far the most common species of Plagiolepis in the 

 amber. The worker is easily recognized by its pilosity, as not only 

 the whole body but also the scapes and legs are covered with coarse 

 erect or suberect hairs. Joints 2 — 6 of the funiculi are as long as 

 broad or a little longer than broad, and the petiole has a low, thick, 

 blunt node, which is a little broader than long. The body measures 

 2,5 — 3 mm. 



I believe that I have seen the male of this species (K 1020 in 

 the Klebs Coll.). It is precisely like the worker in color and size 

 (2,5 mm) and the wings, though rather awkwardly glued together, have 

 the typical Plagiolepis neuration. The terminal tarsal joints are large and 

 dilated; the antennae resemble those of the worker but are 12 -instead 

 of 11 -jointed, and the funicular joints are longer. 



I have seen 85 specimens of this species, distributed as follows: 

 74 workers in the Geolog. Inst. Koenigsberg Coll. (B IS 934, B 19071, 

 XXB 855, B 18 658, XXB 1328, XXB 273, B 19 689, XXB 7205, 

 B 5444, B 464, B 405, B 18172, XXB 1236, B 18156 etc.), one worker 

 without a number in the Berlin Museum and 9 workers and one 

 male in the Klebs Coll. (K 2649, K 947, a 93, « 16, a 210, K 4313, 

 K 1458, K 4045, K 4262, K 1020). I have also examined Mayr's four 

 types in the Geolog. Inst. Koenigsberg Coll. (7693/407, 9492/544, 

 3895/216, and 3769/117). 



Flagiolepis kiXnowi Mayr. 



Plagiolepis Kiinoioi Mayr, Beitr. Naturk. Preuss. I, 1868, p. '59, Taf. I, Fig. 22, 23. $. 

 P. Kiinowi Dalla Torre, Catalog. Hymen. VII, 1893, p. 172; Ern. Axdre, Bull. Soc. 

 Zool. France, XX, 1895, p. 82; Handlirsch, Foss. Insekt. 1908, p. 859. 



This species is known only from the worker form, which is smaller 

 than that of klinsmanni, measuring only 1,5 — 2 mm, and much less 

 pilose, though it has a few suberect hairs on the antennal scapes. Joints 

 2 — 5 of the funiculi are much broader than long, and the petiolar node, 

 though low and blunt, is proportionally much shorter and more com- 

 pressed anteroposteriorly, than in klinsman?ii. 



1 have seen 10 specimens of this ant, 5 in the Klebs Coll. (K 6404, 

 K 6426, « 198, « 215, and « 216), one in the Brussels Museum and 4 in 

 the Geolog. Inst. Koenigsberg Coll. (B 5258, B 199H2, B 18931 and one 

 without a number). I have also examined Mayr's type (3760/108) in 



