MANN: ANTS OF THE FIJI ISLANDS. 457 



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

 blunt teeth. Sculpture of pro- and mesonotum consisting of coarse, separated 

 punctures. Moderately shining; color reddish. 



(Solomon Islands) epinoialis 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 



3. Base of first gastric segment not strigate-punctate 4 



4. Petiole and postpetiole punctate above (Xew Guinea). 



stigmatica Emery 

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

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



stigmatica Emery subsp. sublennodis Emery 



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

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



Head and thorax rugosely striate and punctate; subopaque 8 



6. Occipital region without costae tortuosa Mann subsp. polita Mann 



Occipital region with parallel, arcuate costae 7 



7. Front \\ith interrupted carinae inward from and parallel to frontal 

 carinae (Fiji), tortuosa Mann 



Front without carinae inward to frontal carinae. 



tortuosa Mann, subsp. levifrons Mann 



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

 with rounded sides; antennal scrobes poorh^ defined: inferior epinotal spines 

 long. Sculpture coarse rugo>-:a Mann 



Smaller species (length 2.10-2.2.5 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. no^■.). 



Head subcjuadrate. Mandibles elongate, basal border short and strongly 

 dentate in front of middle. Ch-peus moderately produced at middle, the 

 anterior border quadridentate. Frontal carinae short, moderately dilated 

 and appro"ximate 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, subquadrate. Postpetiole rounded, longer than petiole. 



Near Adelomj^rmex but differing in having the clypeus 4-dentate, 

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

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



