809 



as its terminal joint. Thorax very short and robust, nowhere 

 marginate ; pronotum and mesonotum together as broad as 

 long, not separated by a suture and without a median carina, 

 trapezoidal, rapidly tapering behind, with rounded humeri ; in 

 profile about as long as high, somewhat flattened dorsally ; 

 mesoepinotal constriction narrow and pronounced. Epinotum 

 short, broader than long, with the base flat and shorter than 

 the declivity, the spines as long as the base, slender, parallel, 

 acute, directed backward, and very slightly upward. Petiole 

 a little longer than broad, a little broader in front than 

 hehind, with broadly-rounded anterior corners and straight 

 sides. Postpetiole transverse, convex, without any trace of a 

 median furrow, but distinctly emarginate behind. Caster 

 large, with straight anterior border. Legs rather slender. 



Head, thorax, and pedicel opaque ; mandibles very finely 

 and densely longitudinally striated ; head, thorax, and pedicel 

 very finely, densely, and uniformly punctate ; clypeus, front, 

 and cheeks also finely longitudinally rugulose. Gaster shining, 

 very finely and superficially reticulate. Hairs white, long, 

 and erect on the clypeus and venter, short and almost absent 

 on the upper-surface of the body, very minute, scattered and 

 appressed on the scapes and legs. Pubescence very sparse and 

 rather long, most distinct on the gaster. Dark-brown ; gaster 

 black; mandibles, antennae, and legs brownish-yellow, middle 

 portions of femora and tibiae brown. 



Described from a single worker taken in the Everard 

 Range. 



This species is easily distinguished from any of the other 

 known Australian species of the genus by its peculiar sculpture. 

 It seems to resemble C. mjohergi, Forel, from Kimberley, 

 North-western Australia, judging from the description; but 

 this species has a three-jointed antennal club, the head is 

 smooth and shining, and the mesonotum has a median longi- 

 tudinal impression. 



11. Ceematogaster longiceps, Forel, var. curticeps, n. var. 



Worker. — Differing from the typical longiceps in the 

 shape of the head and in its much darker colour. The head is 

 only as long as broad and very nearly rectangular, with 

 straight, parallel sides and very feebly concave posterior 

 border. Above it is very shining, but covered with minute, 

 scattered punctures. The body is reddish-brown throughout, 

 except the gaster, which is black. The absence of pilosity is 

 as conspicuous as in the type. There are, however, several 

 long, slender hairs on the gula and clypeus, and the pubescence 

 on the head and gaster is rather long, but very dilute. 



