The Ants of the Uahic AidIkt. 



60 



ently dilated and overlap the insertions of the antennto. They are 

 12-jointed. The eyes are of moderate size and placed further back 

 than in most Ponerine genera. The pronotum has a distinct humer.d 

 tubercle on each side as in Faraponera, Odontopoiera and some species 

 of Ectatomma. The thorax is constricted in the mesoepinotal region, 

 and the mesonotum form a small convex plate in front of the con- 

 striction and extending forward in the median line between the postero- 

 lateral portions of the pronotum. The epinotum bears a pair of blunt 

 tubercles and has a rather flat base and a concave sloping declivity, 

 which is bordered on each side by a distinct ridge continuous with 

 the tubercle of the same side. The petiole has a concave anterior and 

 a more flattened posterior declivity, both bordered by a sharp ridge 

 on each side and meeting above in a transverse rid<^e at the summit 

 of the node. Gaster with a distinct constriction between the first and 

 second segments. Legs long. 



Efect)'oponera dubia, sp. nov. 



Worker (Fig. 6). Length about 7,5 mm. 



With the form described in the preceding paragraph. Antennal 



scapes reaching to the posterior corners of the head; basal funicular 



joints a little longer than broad, more distal joints as broad as long. 



Surface apparently opaque; 



^^-^- 



thorax and petiole with parallel 

 series of rugge, those on the prono- 

 tum concentric with the humeral 

 tubercles, those on the mesopleurae, 

 sides of the epinotum and sides of 

 the petiole sublongitudinal. 



Hairs erect, abundant and 

 rather long, especially on the 

 head, pronotum and gaster; more 

 reclinate on the legs and antennal 

 scapes. 



Color black. 



That this ant is quite dis- 

 tinct from any of the other 

 species described from the amber 

 is certain, but its exact position 

 in the Ponerine subfamily can 

 be determined only after the discovery of additional specimens. I have 

 placed it provisionally in the tribe Ectatommini. 



3* 



Fij.'. fi. Eleclrojionera duhln sp. nov. 

 Worker, H 18994. 



