North and South-west Australia (&c. 235 



border, which is denfate and terminated by two long teetli. 

 Anterior border of clypeus widely and. very feebly emarginate, 

 almost straight ; there is a ridge down its centre. Frontal 

 area deep, rounded at top. Head somewhat longer than wide, 

 with slightly convex sides ; back widely emargiuate. The 

 scapes reach tlie occipital border or a fraction farther. Eyes 

 prominent, slightly in front of the centre o£ sides. Pro- 

 mesonotum high and regularly curved, broader in front ; at 

 the centre of each side is a tooth-like ridge. Basal surface of 

 epinotum longer than declivous surface ; spines much shorter 

 than basal surface, about as long as the interval between 

 them. First node narrow, straight across the top; second 

 node oval, longer than broad. 



Head coarsely striate longitudinally and finely reticulate. 

 Thorax and pedicel finely reticulate ; pronotum with a few 

 longitudinal ridges ; a few ridges joining the mesonotum 

 to the epinotum. Front of first segment of gaster faintly 

 reticulate. 



Body with yellow hairs ; erect hairs on scapes and 

 tibiae. 



Yellow to red-brown. In daik specimens the antemipe, 

 tarsi, and ioints of legs paler. 



Stapletdn, N.T., 1. v. 13 {IIill). 



No. 214. Pheidole mecjacephala , F. 



H ^ . Batciielor, N.T., 20. ix. 13 {Hill). 

 Cosmopolitan species. 



No. 32. Pheidole variabilis, Mayr., var. redunca, var. n. 



'U.—L. 2-7 mm. 



Clypeus emarginate in front, with a ridge down the centre. 

 The ridges continuing the frontal carinse are two-thirds as 

 long as the scapes, wiiich reach beyond the half distance 

 from their bases to the occiput. Eyes just within the 

 anterior third of sides of head. The impression from the 

 occi])ital emargination is continued to the vertex. Spines 

 as long as the basal surface of epinotum and longer than the 

 interval between them. 



Whole of upper and under surfaces of head finely reticulate ; 

 in addition, the under surface of front of head, the cheeks, 

 and the whole of the top of head longitudinally striate ; the 

 ridges on each side of the central impression curve round the 

 lobes of the occiput and continue down the sides of tiie head, 

 those farther from the central impression making a narrow 



