AUSTRALIAN CERAPACHYINI. 247 



23. Phyracaces scrutator sp. nov. 

 (Fig. 10.) 



Worker. Length 3.G-4 mm. 



Head decidedly longer than broad, slightly narrower in front than 

 behind, with feebly rounded sides, deeply and angularly excised 

 occipital border and truncated occipital surface, with the infero- 

 posterior angles sharp when seen from behind. Eyes large and rather 

 convex, slightly in front of the middle. Ocelli absent. Mandibles 

 rather large and broad, triangular, deflected, their external borders 

 feebly concave, their apical borders straight, without denticles. 

 Clypeus short, vertical, its anterior border rounded and entire. 

 Frontal carina? erect, rounded, not truncated posteriorly but gradu- 

 ally continued back into the short frontal furrow. Carina of cheeks 



Figure 10. Phyracaces scrutator sp. nov. Worker, a, dorsal view of body, 

 b, antenna of same. 



short, prominent, but scarcely tooth-like, sending a branch backward 

 to the anterior orbit and one inward to the antennal fovea. Occipital 

 border of head sharply marginate, the margination surrounding the 

 inferoposterior corners of the head and running forward on each side 

 of the gula to a level with the posterior orbits. Postocular carina 

 absent. Antennae moderately long; scapes nearly | as long as the 

 head, incrassated at their tips; first funicular joint longer than broad; 

 joints 2-9 a little broader than long, tenth joint as long as broad, 

 terminal joint but slightly longer than the two preceding joints to- 

 gether. Thorax rather narrow, from above more than twice as long 

 as broad, as broad through the pronotum as through the epinotum, 

 feebly narrowed in the mesonotal region, sharply marginate in front, 

 on the sides, between the base and declivity of the epinotum, along 

 the lateral borders of the declivity and the prosterna. In profile the 

 dorsal surface is rather flat, the epinotal declivity abrupt and slightly 



