AUSTRALIAN HONEY-ANTS. 285 



mesonotum in front nearly oAerarches the pronotum, from which it is 

 separated by a deep constriction. The whole thorax is cylindrical. 

 The declivous surface of the epinotum is not half as long as the basal 

 surface; the two stigmata form a sharp angle between the two sur- 

 faces. Surface lustrous and pubescent, without erect hairs except on 

 the venter." 



Leptomyrmex erythrocephalus var. rufithorax Forel. 



" Worker. Length 9-10.7 mm. 



Entirely like the type of the species, but with the whole thorax red 

 and not only the head. Legs, petiole and gaster brownish black." 

 Queensland; Mt. Tambourine (E. Mjoberg). 



Leptomyrmex mjobergi Forel. 



" Worker. Length 5.3-6 mm. 



Head fully twice as long as broad. Clypeus ecarinate, with nearly 

 straight anterior border (scarcely convex, without a lobe). The eyes 

 are feebly convex and lie somewhat behind the middle of the sides of 

 the head. Behind them the head is distinctly but gradually nar- 

 rowed, and with convex lateral margins and has behind a narrow 

 but distinct occipital border, which is rather concave than convex 

 (much as in enjthroeephalus). The antennal scape surpasses the 

 occipital border by | of its length. Thorax between the base of the 

 epinotum and the promesonotum distinctly constricted. The pro- 

 mesonotum is very feebly but uniformly convex, distinctly lower than 

 the basal surface of the epinotum, and this surface is twice as long as 

 the declivity. The petiole is rather strongly inclined forward, nearly 

 twice as high as long and has about the form of an anteriorly inclined 

 paraUelopipedon, which is, however, somewhat convex above and with 

 flat, but anteriorly inclined anterior and posterior surface. 



Surface of body moderately shining, throughout finely and super- 

 ficially shagreened, with delicate, short and sparse pubescence and 

 without erect hairs. 



Black; femora, scapes and tibife brown; mandibles reddish l^rown; 

 tarsi reddish yellow. 



Queensland; Colosseum, Tolga, Herberton (E. Mjoberg). 



This, the smallest species of the genus, with its entirely black body 



