MANN! INT8 OF THE FIJI ISLANDS. 457 



2. Base of epinotum Bmooth and shining, inferior angles extended as short 

 blunt teeth. Sculpture of pro- and tnesonotum consisting <>f coarse, separated 

 punctures. Moderately Bhining; oolor reddish. 



(Solomon Islands) cpi/mlali. Mann 



Base of epinotum uniformly punctate and opaque; inferior angles rounded. 

 Sculpture of pro- and mesonotum consisting of punctures and coarse striae. 

 Opaque; color darker 3 



:;. Base of first gastric segmenl aol strigate-punctate 4 



l. Petiole and postpetiole punctate above (New Guini 



stigmatica Emery 



Petiole and postpetiole, in part, smooth and shining above; sculpture of 



head and thorax stronger. (Loyalty Islands. Samoa. Fiji). 



stigmatica Emery subsp. sublevinodis Emery 

 5. Head and thorax shining; thorax not striate or rugose, hut sparsely 



punctate; head with widely separated parallel costae or sparsely striate. . . .6 



Head and thorax rugosely striate and punctate; subopaque 8 



Ik Occipital region without costae tortuosa Mann subsp. poliUi Mann 



Occipital region with parallel, arcuate costae 7 



7. Front with interrupted carinae inward from and parallel bo frontal 

 carinae (Fiji)- tortuoxn Mann 



Front without carinae inward to frontal carinae. 



tortuma Mann, subsp. leirifrons Mann 



8. Larger species (length 2.50-3 mm.). Head, scarcely longer than broad 

 with rounded sides; antennal scrobes poorly defined: inferior epinotal spines 

 Long. Sculpture coarse rugosa Mann 



Smaller species (length 2.10-2.25 mm.). Head distinctly longer than broad 

 with nearly straight sides. Antennal scrobes well defined. Inferior epinotal 

 spines short. Sculpture fine striatella Mann 



Adelomyrmex (Arctomyrmex, subgen. nov.). 



Head Bubquadrate. Mandibles elongate, basal border short and strongly 

 dentate in front of middle. Clypeus moderately produced at middle, the 

 anterior border quadridentate. Frontal carinae short, moderately dilated 

 and approximate at base. Antennae 12-jointed, short, and stout, club 2- 

 jointed. the terminal joint very large. Promesonotal suture obsolete. Meso- 

 epinotal impression strong laterally, weak at middle. Epinotum with pair 

 of spines above; inferior angles produced and rounded. Petiolar node in 

 profile elevated, Bubquadrate. Postpetiole rounded, longer than petiole. 



Near Adelomyrmex but differing in having the clypeus 4-dentate, 

 and in the structure of the petiole and postpetiole. The inferior 

 epinotal angles in Adelomyrmex are pointed, the spines are large and 



