238 WHEELER. 



especially at its tip. Tibii^e and gaster with a few suberect, delicate 

 hairs. 



Uniformly brownish yellow; mandibles, frontal carinje and incisures 

 of antennal joints fuscous. 



Female. Length 7 mm. 



Very similar to the worker but besides its larger size differing in the 

 following characters: Head not longer than broad, with much more 

 convex sides. Posterior ocelli absent; eyes and the anterior ocellus 

 present but the former very small, reduced to three or four minute 

 ommatidia. Thorax shorter and stouter, not more than twice as long 

 as broad, pronotum and lateral borders not submarginate and margin- 

 ation of epinotum indistinct. Petiole as broad as the epinotum, 

 broader in proportion to its length than in the worker, flattened 

 above, its posterior border broadly concave in the middle, its anterior 

 surface not submarginate. Postpetiole and gaster larger, the incisures 

 between the segments of the latter much less pronounced than in 

 the worker, the postpetiole flattened above, nearly twice as broad 

 as long, as are also the three basal gastric segments. Pygidium 

 broadly and rather deeply excised behind, its posterior surface trun- 

 cated, with almost submarginate sides, the posterior excision beset 

 with minute spinules. Sting short and stout. 



Sculpture like that of the worker, the surface being quite as shining; 

 the thorax and abdomen with fine punctures and in addition with 

 large, scattered, shallow foveoUie. 



Hairs much more abundant than in the worker, erect anfl bristly, 

 conspicuous also on the appendages. Pubescence abundant and 

 rather dense, especially on the head and gaster. 



Color like that of the worker, but the mandibles are ferruginous red 

 with their apical and basal borders black. Sting black. 



Described from numerous workers and a single female taken from 

 the same colony in December 1916 at Leura in the Blue Mts. of 

 New South Wales by Dr. W. M. Mann. 



This form is very close to ivibecUlis Forel, but the female and largest 

 workers are larger and the former possesses small eyes and has a shining 

 body like the worker, the pronotum has more pronounced corners, 

 the epinotal declivity of the worker is distinctly marginate above, the 

 petiole is broader, and both the large and small workers have the 

 same pale coloration. Additional material may show that manni 

 is to be regarded as a subspecies of ivihecilUs. 



