AUSTRALIAN CERAPACHYINI. 259 



postpetiole, a little broader than long and a little broader behind 

 than in front. Pygidium concave above, Avith marginate, minutely 

 spinulose sides. Legs moderately long; hind coxje with a large, 

 angular, translucent lamella at the tip on the inner side. 



Smooth and shining; mandibles coarsely punctate; head and 

 thorax above with numerous piligerous foveolje, gaster with piliger- 

 ous punctures. 



Hairs covering the body and appendages sparse, white, rather long, 

 suberect and delicate. Pubescence pale, dilute, distinct only on the 

 appendages. 



Black; mandibles, cheeks, front, clypeus, legs, sting, pygidium and 

 incisures of abdomen, dark red. 



Described from numerous specimens from a single colony taken 

 Sept. 19, 1914 from under a small stone in the bottom of one of the 

 deep gorges at Katoomba in the Blue Mts. of New South Wales. 



This species seems to be very close to Ph. adamus Forel, but differs 

 in its smaller size, less rectangular petiole, somewhat smaller eyes, 

 broader eighth and ninth funicular joints and the red front of the 

 head. 



30. Phyracaces adamus Forel. 



Cerapachys (Phyracaces) adamus Forel, Rev. Suisse Zool. 18, 1910, 

 p. 18, S . 



Phyracaces adamus Emery, Gen. Insect. Fasc. 118, 1911, p. 11, ^ . 



Queensland: Kuranda (Rowland Turner). 



The worker of this species, which I have not seen, is, according to 

 Forel, close to turneri, but larger (4.2-4.8 mm.), with the eyes much 

 more developed and the head of a different conformation. 



31. Phyracaces senescens sp. nov. 

 (Fig. 16.) 



Worker. Length 3.6^ mm. 



Head longer than broad, as broad in front as behind, with moder- 

 ately large, flattened eyes, placed at the middle of its sides. Ocelli 

 absent. Lpper surface of head convex, occipital surface truncated, 

 sides scarcely convex, occipital border broadly excised, marginate, 

 the margination surrounding the rather acute inferoposterior corners 

 and running forward on each side of the gular surface to the middle 

 of the head. Postocular carina absent. Carina of cheeks weU 



