AUSTRALIAN CERAPACHYINI. 243 



17. Phyracaces emeryi ^'it'hmeyel■. 



Viehmeyer, Arch. f. Naturg. 79, 1913, p. '2(], ^ . 

 South Austraha: KiUalpaninna. 



18. Phyracaces mjobergi Forel. 



Cerapachys (Phyracaces) mjobergi Forel, Ark. f. Zool. 9, 1915, p. 18, 

 PI. 1, Fig. 9, U . ' 



North West Australia: Derby (E. Mjoberg). 



19. Phyracaces sjostedti Forel. 



Cerapachys {Phyracaces) sjostedti Forel, Ark. f. Zool. 9, 1915, p. 19, 

 PI. 1, Fig. 6, S . 



North West Australia (E. Mjoberg). 



20. Phyracaces jovis Forel. 



Cerapachys (Phyracaces) jovis Forel, Ark. f. Zool. 9, 1915, p. 20, 

 PI. 1, Fig. 1, ^ . 



Queensland: Alice River (E. Mjoberg). 



21. Phyracaces leae sp. nov. 



(Fig. 8.) 



Worker. Length 5 mm. 



Head longer than broad, slightly narrower in front than behind, 

 with truncated occipital surface, deeply and angularly excised posterior 

 border and acute inferoposterior angles. Eyes rather large, moder- 

 ately convex, just in front of the middle of the sides. Carinse of 

 cheeks forming acute angles in front, extending back to the anterior 

 orbits and sending a branch inward to the antennal fossa. Post- 

 ocular carina absent. Occipital border of head marginate, the margin 

 surrounding the inferoposterior corners and extending forward as 

 a pair of gular carinse to the level of the middle of the eyes. Mandi- 

 bles moderately large, triangular, deflected, their external borders 

 concave, their apical borders without denticles. Frontal carinne 

 approximated, rounded, erect, not truncated behind where they fuse 



