No. 22.] HYMENOPTERA OF CONNECTICUT. 581 



Both spurs of mid and hind legs well developed; medium 

 or large species, with larger eyes 10 



10. Cheeks with a longitudinal carina Neoponera 



Cheeks without a carina n 



11. Pronotum more or less marginate on sides; mid tibiae not 



abbreviated nor beset with prominent bristles 



Pachycondyla (s. str.) 

 Pronotum not marginate on sides; mid tibiae short, with 



prominent bristles on their exterior surfaces 



Euponera (Pseudoponera) 



Stigmatomma Roger. 



S. pallipes Haldeman, var wheeleri Santschi. 



This singular and primitive ant is subterranean or hypogaeic in 

 its habits, and occurs only in rich, rather damp woods, under 

 stones, leaf-mold, or more rarely under rotten logs. It is by no 

 means common. The colonies are small, comprising in extreme 

 cases from- forty to sixty individuals. The males and winged 

 females appear in August and early September. 



Suffield (Geo. Dimmock) ; Colebrook (W. M. W.). 



Ponera Latreille. 



P. coarctata pennsylvanica (Buckley) Emery. 



Like the preceding, this small, slender species lives in small 

 colonies, but is much more abundant. It nests under stones and 

 vegetable mold, in rotten logs, etc., in rather open woods, along 

 hedges, etc. The males and winged females appear in late 

 August and early September. 



Colebrook (W. M. W.). 



Myrmicin^e. 



Key to Genera. 



1. Workers absent Epoecus ; Sympheidole; Epipheidole 



Workers present 2 



2. Clypeus not extending back between frontal carinae, which 



are closely approximated; antennae 12-jointed 



Pseudomyrma 

 Clypeus almost always extending back between frontal carinae, 

 which are more or less separated; in the opposite case 

 antennae 1 i-jointed 3 



3. Antennal fossae prolonged as grooves for antennal scapes 



