98 Psyche [August 



distinct, the mesonotum falling abruptly behind to the pronounced 

 mesoepinotal constriction, which is deep and narrow. Epinotum 

 smaller and lower than the promesonotum, armed with acute teeth 

 or spines both above and at the metasternal angles. Petiole and 

 postpetiole much as in many Leptothorax, the petiole with a short 

 peduncle and a high angular node, in one species produced into a 

 spine, the postpetiole constricted behind, broader than the petiole. 

 Gaster rather voluminous, broadly elliptical, somewhat com- 

 pressed dorsoventrally, mostly formed by the first segment. Legs 

 rather slender, the femora and tibiae not conspicuously incrassated; 

 middle and hind tibise without spurs. 



Male. Smaller than the worker. Mandibles very small, 

 vestigial, edentate. Cheeks short. Eyes moderately large; ocelli 

 prominent, though small and rather far apart. Antenna? long, 

 slender, filiform, 13-jointed; scapes long, nearly as long as the three 

 basal joints of the funiculus, first funicular joint not swollen or 

 enlarged. Thorax short; mesonotum with very feeble traces of 

 Mayrian furrows; epinotum long, abrupt, somewhat concave, 

 unarmed, without distinct base and declivity. Nodes of the 

 petiole and postpetiole low. Genitalia small and retracted, the 

 external valves simple, rounded at their tips. Wings hairy, with 

 distinct pterostigma, a discoidal, a closed radial and a single 

 large cubital cell. 



Genotype: Podomyrma caledonica Ern. Andre. 



This genus is very close to Podomyrma, but the species of the 

 latter are larger ants, with 11 -jointed antennae in the workers and 

 females, with more flattened, not bicarinate clypeus, with the 

 epinotum unarmed or only feebly armed, the femora conspicuously 

 incrassated and the petiole and postpetiole of a different shape. 



Table of Species. 



1. Apex of petiolar node produced into a spine above; epinotal 



spines very long, curved and diverging. Length 3.5 mm. 



furcifera Emery 



Apex of petiolar node angular, acuminate or acutely conical 



above; epinotal spines much shorter, nearly straight 2 



2. Antennal scrobe anteriorly divided by a short median longi- 



tudinal cannula into separate depressions for the scape and 



funiculus. Length 3 mm cryptocera Emery 



Antennal scrobe not thus divided 3 



