248 WHEELER. 



concave, the posterior corners of the epinotum minutely and indis- 

 tinctly dentate and the mesopleurse are concave. Petiole slightly 

 broader than the epinotum, rectangular, scarcely broader behind 

 than in front and somewhat broader than long, its anterior border 

 broadly concave, the lateral borders straight, the anterior corners 

 rectangular, .the posterior produced as acute, flattened teeth. The 

 anterior and lateral borders are sharply marginate. In profile the 

 dorsal surface is feebly convex, the anterior surface truncate and con- 

 cave, the ventral surface in front with a swelling but without a tooth. 

 Postpetiole somewhat broader than the petiole, a little broader than 

 long and broader behind than in front, its sides feebly convex; these 

 and the anterior border not marginate. First gastric segment broa ier 

 than the petiole and broader than long. Pygidium very feebly con- 

 cave above, marginate and minutely spinulose on the sides. Legs 

 moderately long; hind coxfe with a large, rounded, translucent 

 lamella at the tip on the inner side. 



Subopaque, or lustrous; mandibles, clypeus and gaster more 

 shining. Mandibles shagreened and very sparsely and coarsely 

 punctate. Head, thorax, petiole and postpetiole very densely and 

 finely reticulate, posterior portion of head and dorsal surface of thorax, 

 petiole and postpetiole also with shallow, evenly but very sparsely 

 distributed, piligerous foveolje. Gaster, scapes and legs more super- 

 ficially reticulate than the thorax, the gaster also with scattered, 

 coarse, piligerous punctures. 



Hairs yellow, rather coarse and long, subappressed, very sparse 

 on the upper surface of the head, more abundant on the dorsum of 

 the rest of the body, absent on the scapes and legs which have only a 

 long, dilute, yellowish pubescence. 



Rich red throughout, of the tint of Polyergus rufescens, with only 

 the apical border of the mandibles, the edges of the frontal carina? 

 and the marginations of the thorax and petiole of a deeper tint. 



Described from several specimens taken Nov. 10, 1914 at Toowong, 

 near Brisbane, Queensland. They were running about rapidly under 

 a stone, evidently in search of the brood of other ants. 



This species is easily distinguished from all the other red species of 

 Phyracaces by the subopaque, finely reticulate surface of the head, 

 thorax, petiole and postpetiole. 



