254 



WHEELER. 



27. Phyracaces elegans sp. nov. 

 (Fig. 13.) 



Worker. Length 3-3.5 mm. 



Head longer than broad, broader behind than in front, convex abo\-e, 

 with truncated occipital region and gula, blunt posterior corners and 

 excised posterior border. Eyes rather large, flat, distinctly in front 

 of the middle of the sides; ocelli absent. Carina of cheeks forming 

 a blunt, rectangular tooth. Postocular carina absent. Posterior 

 border of head marginate, the margination surrounding the infero- 

 posterior corners and extending forward on each side of the gula 

 about i the length of the head. Mandibles triangular, deflected, 

 with finely denticulate apical and rather convex external borders. 

 Frontal carinte moderately large, erect, rounded, confluent but not 

 truncated behind. Antennae rather robust; scapes half as long as 



Figure 13. Phyracaces elegans sp. nov. 

 b, antenna of same. 



Worker, a, dorsal view of body, 



the head, gradually thickened towards their tips; funicular joints 

 1-9 distinctly broader than long, tenth joint longer than broad, 

 terminal joint tapering and pointed, a little longer than the two pre- 

 ceding joints together. Thorax narrower than the head, as broad 

 through the pronotum as through the epinotum, narrowed in the 

 mesonotal region; in profile rather flat above, with straight, abrupt 

 epinotal declivity. All four sides of the dorsum, the prosterna and 

 sides of the epinotal declivity are distinctly marginate, and the 

 epinotinn bears a pair of small acute teeth. Petiole rectangular, 

 somewhat broader than long,' as broad as the epinotum, its anterior 

 border slightly concave, the lateral borders marginate, with small 

 acute, dentiform posterior corners. In profile the petiole is flat 

 above and concave on the sides, the anterior surface is abrupt and 

 forms somewhat less than a right angle .with the dorsal surface, the 



