408 



489. Polyrhachis convexa, Roger, Berl. ent. Zeit. vii (1863), 

 p. 153, $ ; Forel, Jour. omb. N. H. Soc. viii (1893), p. 19, $ . 



. Black, very finely rugulose, and covered with a very fine 

 short, recumbent glistening grey pile. Head short, as broad 

 posteriorly as in front, the cheeks very slightly convex, the eyes 

 prominent ; clypeus tectiform, rounded anteriorly ; antennal 

 carinae divergent towards the vertex. Thorax, seen from the side, 

 strongly arched, the pro-, meso- and basal portion of metanotum 

 all broader than they are long ; apical portion of metanotum 

 deeply concave ; pronotal spines short, acute, directed divergently 

 forward ; basal portion of metanotum bounded posteriorly by a 



Fig. 141. Polyrhachis convexa, . 



slight carina between two short erect points at its lateral posterior 

 angles ; legs moderately long, devoid of spines or erect hairs. 

 Node of pedicel broad, biconvex, armed with four short subequal 

 spines placed about equidistant from each other ; abdomen short, 

 globose. 



Length, $ 5'5-G mm. 



Sab. Ceylon : Kandy, Jaffna (Green), Colombo (Bingham). 



490. Polyrhachis selene, Emery, Ann. Mns. Civ. Gen. xxvii (1889), 

 p. 518, $, pi. 11, fiprs. 18 & 19 ; Forel, Jour. Bomb. N. H. Soc. 

 viii (1893), p. 18, $ . 



$ . Black, opaque ; head and thorax finely, abdomen minutely 

 and more finely rngulose, covered with a very short black erect 

 pubescence. Head short, broad, con- 

 vex, the occiput broad, almost flat, 

 the posterior lateral angles well- 

 marked, cheeks convex ; clypeus con- 

 vex, with a medial vertical carina, its 

 anterior margin strongly arched and 

 rounded ; antennal carinse not promi- 

 nent, very wide apart. Thorax very 

 bread; pronotum much broader than 

 long, anteriorly transverse ; lateral 

 anterior angles pointed, but without 

 spines ; mesonotum flat, transversely oval ; pro-mesonotal suture 

 distinct j meso-metanotal suture impressed, very distinct ; basal 



Fig. \42.PolyrhacItis scfcnc, 



