PBENOLEPIS. 325 



reddish yellow, with a few sharp brown teeth. The clypeus bears 

 an impressed line parallel to its anterior margin, in the middle it 

 is strongly convex. Frontal area indistinct. Head towards the 

 front with very scattered fine punctures, or nearly smooth. The 

 abdomen appears to be without Sculpture." (Roger.) 

 Hab. Ceylon. Unknown to me. 



Genus PRENOLEPIS. 



Formica, pt., Latr. Hist. Nat. Fourm. 1802, p. 113, $ . 

 Prenolepis, Mayr, Eur. Form. 1861, p. 52. 



Type, P. nitens, Mayr, from Europe. 



Range. Generally distributed through both hemispheres. 



. Mandibles moderately broad, dentate, the apical tooth long, 

 curved and acute ; clypeus proportionately large, convex, its 

 anterior margin slightly indented in the middle so as not to cover 

 the mandibles ; antennal carinae very short ; antennae 12-jointed, 

 . placed very close to the posterior margin of the clypeus, the scape 

 remarkably long and slender ; antennal and clypeal hollows 

 separate ; frontal area not sharply defined ; ocelli wanting ; eyes 

 placed above the middle of the sides of the head. Thorax with the 

 pro-meso- and meso-metauotal sutures very distinct, the pro- and 

 mesonotum rounded and convex ; the metanotum as broad as the 

 mesonotum or broader, its basal portion convex, its apical portion 

 truncate, only slightly convex, almost flat ; the thorax viewed 

 sideways shows a deep emargination at the meso-metanotal suture ; 

 legs moderately long, slender. Pedicel short, the node somewhat 

 quadrangular, inclined forwards ; abdomen broad anteriorly, very 

 high and convex, somewhat overhanging the pedicel. 



$ . Head small in proportion to the very massive thorax and 

 abdomen ; mandibles, clypeus and antennae as in the $ ; ocelli 

 distinct. Thorax : the pronotum vertical, not forming part of the 

 dorsum ; mesonotum broad, lightly convex, bearing two short, 

 parallel, widely separated, longitudinally impressed lines posteriorly; 

 scutellum large, with a shallow impressed short furrow in the 

 middle ; metanotum rounded. Node of the pedicel slightly thicker 

 than in the , very low and almost close to the forward bulge of 

 the remarkably large and massive abdomen. 



d" . As small as or smaller than the g , slender. Head from in 

 front oval, posteriorly narrowed and arched ; mandibles short, not 

 hidden under the clypeus ; clypeus as in the $ , but the anterior 

 margin rounded ; antennae 13-jointed, remarkably long, very 

 slender and filiform ; eyes and ocelli very large, the former placed 

 in the middle of the sides of the head. Thorax massive ; legs very 

 long and slender ; wings long and ample, with one marginal and 

 one cubital cell. External genitalia small and narrow. 



