The Auts of the Baltic Amber. .49 



overarching the pronotum and without Mayrian furrows. Epinotum 

 rounded, slightly convex, without distinct basal and declivous surfaces, 

 sloping, with two faint parallel ridges in the place of teeth. Petiole 

 and postpetiole in profile each about as high as long, with low, rounded 

 nodes; the petiole with an anteroventral tooth, the postpetiole broad 

 behind and not constricted where it is attached to the gaster. Gaster 

 pointed at the tip, with small genital appendages exactly like those 

 of the male E. longi in shape. Legs slender. Wings broad and 

 ample (4,4 mm. long); venation like that of the female. 



Surface of body and appendages apparently smooth. 



Hairs slender, short, suberect, covering the body but absent on 

 the legs. Wings minutely hairy 



Dark golden brown; head and thorax largely blackish; legs and 

 gaster yellowish. Wings colored like those of the female. 



Described from the following specimens: 



Three workers in the Geolog. Inst. Koenigsberg Coll., two in a 

 single block of amber (B 243) containing also a small fly (Phora 

 loewi Brues; type), a few small Collembola, some fragments of wood (?) 

 and many bubbles. A fourth worker (B 19926) is in a clear piece 

 of amber. 



Two females in the Geolog. Inst. Koenigsberg Coll., No. 447/7733 

 (Mayb's type), measuring about 5,5 mm and one (without a number) 

 measuring about 6,5 mm. 



Three males, one in the Geolog. Inst. Koenigsberg Coll. (without 

 a number) and two in the Klebs Coll. (K 1029 and K 4523). The 

 description of the male is drawn from K 1029. 



Mayr referred this species, which he based on three female spe- 

 cimens, to Pheidologeton, though hn was aware that it differed from 

 the living members of this genus in its much smaller size. The other 

 differences, which he mentions, such as the dentition of the mandibles 

 and the venation of the wings, I find from an examination of spe- 

 cimens of Ph. diversKS and affinis in my collection, to be less impor- 

 tant than he supposed, so that he is not to be blamed for his generic 

 diagnosis. Emery, however, in connection with his description of a 

 male ant which he found in the Sicilian amber and called Aeromynna 

 sophicE, stated that Mayr's Pheidologeton antiquiis ,,appartiene senza 

 dubio alio stesso genere", so that later writers have called it A. antiqua. 

 The discovery of the worker described above makes the generic affi- 

 nities of this species perfectly clear, for this phase agrees so closely 

 with the worker of E. longi that the two species are almost indistinguish- 

 able except by the small epinotal teeth, which are more acute and 



Schriften d. Pbysikal.-okonom. Gesellschufl. .lahrgang I.V. 4 



