406 FORMICIDJE. 



punctured, rugulose and opaque, the punctures in certain speci- 

 mens seem to run into minutely fine striae. Head elongately 

 oval, the cheeks nearly straight, the head behind the eyes nar- 

 rowed, distinctly narrower than in front ; clypeus angularly 

 arched in front, tectiform, with a well-marked medial vertical 

 carina ; antennal carinae long, closely approximate in front. 

 Thorax with the lateral angles of the prouotum armed with two 

 long strong broad-based spines, slightly curved downwards and 

 pointing forwards and outwards ; basal portion of metanotum 

 transversely subtnargined, apical portion concave, striate, not 

 smooth; legs long, the tibiae not spinous beneath. Node of 

 pedicel high, biconvex, armed at the upper lateral angles with two 

 upright slightly divergent spines, as long as the prouotal spines 

 or a little longer, and on the sides beneath the base of the above 

 with a short, acute, laterally-pointed tooth ; abdomen massive, much 

 broader than the thorax. 



Length, $ 9-5-10 mm. 



Hab. Sikhim (M oiler) ; Assam (Long) ; Burma {Bfagham) ; 

 Malacca, Sumatra, Borneo, Java. 



486. Polyrhachis hamulata, Emery (sumatrensis, Smith, race hamu- 

 lata), Ann. Mus. Civ. Gen. xxiv (1887), p. 234 ; Forel, Jour. 

 Bomb. N. H. Soc. viii (1893), p. 21, $ . 



$ . Resembles P. striata, Mayr, but is a stouter, more heavily 

 built insect. Black, with a dense erect yellowish-red pilosity and 

 a thin, fine, silky sericeous pile, most dense on the abdomen but 

 in no way hiding the sculpture. Head, thorax and abdomen 

 closely and somewhat coarsely longitudinally striate, the striae 

 finer on the abdomen than on the head and thorax. Head broader 

 posteriorly than in front ; clypeus convex, not carinate. Thorax 

 distinctly broader and more massive than in P. striata ; pronotal 

 spines pointing forwards and outwards ; pro-meso- and meso- 

 metanotal sutures deeply marked and incised laterally; basal 

 portion of metanotum transversely margined and with an erect 

 lateral tooth ; apical portion concave, slightly striate and rugose ; 

 legs long, with longer and denser erect pubescence than on the 

 thorax; tibiae cylindrical, not spinous. Xode of pedicel broad, 

 biconvex, surmounted at its upper lateral angles by two slightly 

 divergent erect spines, on each side beneath their bases is a 

 laterally pointing acute shorter spine ; there is also a distinct 

 medial projection or tooth between the two longer spines ; 

 abdomen broadly oval, massive. 



Length, % 10-10*5 mm. 



Hab. Assam (Smytliies) ; Burma (Fea) ; Tenasserim (Binyham)- 

 Celebes (apud Dalla Torre). 



487. Polyrhachis yerburyi, Forel, Jour. Bomb. N. H. Soc. viii (1893), 

 pp. 20 & 29, $ $ . 



$ . Black, with a few erect yellow hairs on the front of the 



