266 



FOHMHJIDvE. 



Raiuje. Temperate regions of both hemispheres, and high eleva- 

 tions in the tropical or subtropical zones. 



$ . Head more or less oval, but always with a distinct posterior 

 margin ; mandibles broad, the masticatory margin dentate ; maxil- 

 lary palpi 6-, labial palpi 4-jointed ; clypeus strongly convex m 

 the middle, posteriorly produced between tbe bases of tbe antennae, 

 obtusely angular and well-defined; antennal carinaa short, wide 

 apart ; antenna? 12-jointed, the club of the flagellum moderately 

 distinct, formed by the apical 3, 4 or 5 joints ; frontal area tri- 

 angular, depressed. Thorax anteriorly rounded, convex, posteriorly 



, _ Myrmica ntgosa, $ . a. Head ; b. Tibia with pectinate spur. 



more or less rounded from one side to the other; pro-meson otal 

 suture obsolete, meso-metanotal suture more or less distinct, the 

 thorax often slightly emarginate at that point; metanotum (in all 

 Indian species) armed at the posterior lateral angles with two long 

 curved acute spines ; legs moderately long and stout. Pedicel : 

 the 1st node petiolate anteriorly, in front more or less truncate 

 above, posteriorly rounded to the apex by a gradual curve ; 

 2nd node globose or subglobose, transverse, sometimes as long 

 as broad or even longer ; abdomen oval. 



$ . Head, pedicel and legs as in the . Metanotum generally 

 with two teeth or two obtuse tubercles. Wings with one cubital 

 cell half divided by an incomplete nervure, and one discoidal 

 cell. 



c? . The mandibles as in the , dentate. Head smaller ; eyes 

 very large, ocelli prominent ; antennae 13-joiuted, the scape and 

 the slightly thickened apical 5 joints of the flagellum, forming the 

 club, subequal ; thorax massive, the mesonptum raised above the 

 pronotum and slightly gibbous with converging grooves ; meta- 

 notum much longer than in the <j? , with the posterior lateral 

 angles of the slightly sloping basal portion rather prominent, 

 the apical portion obliquely truncate and slightly concave ; pedicel 

 much as in the ; abdomen narrower and smaller than in the $ . 

 "Wings as in the $ , but the division of the cubital cell more 

 developed, though still not quite complete. 



