The Ants of the Baltic Amber. U5 



Head small, including the eyes broader than long, with large 

 convex eyes and ocelli. Mandibles long, narrow, spatulate, edentate 

 and rather blunt at their tips. Antennae short and slender, Ki-jointed; 

 scapes but slightly enlarged towards their tips and reaching only 

 about V3 their length beyond the posterior border of the head; joints 

 of funiculus decreasing rapidly in length distally, joints 1 and 2 sub- 

 equal in length but the former thicker, so that the first is about 3, 

 the second about 4 times as long as broad, penultimate joints scarcely 

 longer than broad, terminal joint as long as the two preceding toge- 

 ther. Thorax large and robust, through the wing insertions more 

 than twice as broad as the head, with very large and somewhat 

 flattened mesonotum and scutellum and the pronotum so much reduced 

 in length as to be invisible when the insect is seen from above. 

 Petiole stout, about twice as long as broad, a little broader behind 

 than in front, with an angle in the middle on each side and a low 

 rounded node. Gaster elliptical, broad and flattened above. External 

 genitalia very small, stipites very short, bluntly pointed, volsellae 

 longer but not clearly visible. Legs very long and slender, terminal 

 tarsal joints and claws large. Wings very large and ample, longer 

 than the body. Veins strongly marked, discal cell absent. 



Sculpture and pilosity much as in the worker. 



Color black or dark brown, with paler appendages. 



This species was described by Mayr from 5 worker specimens, 

 one each in the Berlin Museum, Berendt, Brischke, Menge and Mayr 

 Collections. I have seen 45 specimens distributed as follows : 86 workers 

 and 2 males in the Geolog. Inst. Koenigsberg Coll. (B 14166, B 14192, 

 B 27279, B 18484, B 14342, B 18747, XXB 1972, B 5254, XXB 1505, 

 B 5192, B 5210, XXB 365, B, 18783, B 5421, XXB 1500, B 19059, 

 B 18262, B 5324, B 5334, B 5265, B 19760, 8727/447 and 5 without 

 numbers), 5 workers in the Klebs Coll. (K 834, K 4449, K 936, K 5117, 

 and X 21) and 2 workers (271 and one without a number) in the 

 Berlin Museum. B 14192 in the Geolog. Inst. Koenigsberg Coll. 

 contains 8 workers in a single block and another large block in the 

 same collection (B 14342) contains 4 workers together with 2 specimens 

 of a small Colobopsis -like Camponotiis, several fragments of miscel- 

 laneous ants and debris of various kinds. This mass evidently repre- 

 sents a portion of the refuse heap, much like the kitchen -middens 

 accumulated by our recent ants in or near their nests. 



I believe that I am not mistaken in attributing the two male 

 specimens (B5421 and XXB 1500) to this species as they agree very 

 closely with the male of the recent (£7. smaragdina Fabr. Mayh ob- 



