North and Central Australia. 133 



'^'"atli bears a long perpendioular spine. Spurs of the two 

 prsterior pairs of tibiae very small and simple. Cbius with 

 a sinojle tooth each side. Tiie first (or post-petiole) ajid 

 second segments of gaster of about equal length, the con- 

 striction between them fairly deep. 



Plead, thorax, and node of pedicel coarsely punctured with 

 shilling circular ])imctures (not coarsely wrinkled as in 

 ruetalUca) ; a few coarse strise from the frontal area to vertex. 

 Gaster shining, first segment and anterior half of second 

 sparsely punctured, but not so deeply as thorax. 



Pilosity almost nil ; a few scattered hairs on antennje, 

 legs, and segment of gaster, the remaining segments ringed 

 with sharp outstanding hairs. 



Reddish, with a very slight metallic tinge ; mandibles, 

 antenna^, and legs paler. 



Stapleton, N.T., 23. xii. 12. 



A single ^ in a tube containing Euponera {Brachyponera) 

 lufea, Mayr., var. clira. Under a magiiitication of 100 

 diameters the spurs on the posterior tibiae show no signs of 

 pectination. 



No. 30. Eupmiera {Brachyponera) lutea, Mayr., 

 var. clara, var. n. 



$ . — L. 4"5 mm. 



Slightly smaller and more elongate than lutea, the 

 mandibles not so deeply punctured, and epinotum rather 

 narrower in front; spurs of middle pair of legs very sparsely 

 pectinate, as in lutea. Gaster more elongate. 



Pale chestnut-yellow, sometimes top of head, prothorax, 

 and epinotum slightly darker. 



Stapleton, N.T., 23. xii. 12. 



No. 19. Cerapachys (Syscia) australis, For. 

 Darwin, N.T., 1. iv. 13. ^ . 



No. 25. Platythyrea pai-va, sp. n. 



^ . — L. 3-7-4 mm. 



Mandibles finely reticulate-punctate, with one or two 

 larger punctures, armed with eleven irregular teeth, the 

 apical and preapical longer. Clypeus fairly convex, with a 

 subacuminate lobe in front; lateral margins barely visible, 

 posterior clearly marked. Frontal area indistinct. Eyes 

 medium size, placed well in advance of the middle of sides. 

 Head longer than broad, slightly narrower in front : sides 



