396 FORMICID^. 



$. Very much larger tliaii the ^, not so densely pubescent; 

 thoracic and pedicel spines shorter, thicker ; abdomen proportion- 

 ately more massive. 



Len(/th, ^ 0-6 ; 5 8-9 mm. 



Hab. Bengal {Ihtluiei/) ; Burma {Biwjham) ; Philippines ; 

 Molucca. 



The 2 occasionally has the antennae and legs black. 



468. Poly rhachis dives, A'm///<, Jour. Linn. Sac. ii (1857), p. 64, $; 



Fore/, Jour. Bumh. X K. ^oc. viii (1893), pp. '21 & .34, ^ . 



^ . Black, with a dense, bronzy, goldeii recumbent pile, sparse 

 on the head, but fairly dense on the thorax and abdomen, hiding 

 the sculpture. Head finely rugulose, short aiid broad, as broad 

 posteriorly as in front, the cheeks convex ; the clypeus medially 

 vertically cari)iate, subiobed, the anterior border of the lobe emar- 

 ginate. Thorax very convex and rounded; pronotal spines pointing 

 forward, outward and slightly bent downward ; metanotal spines 

 erect, divergent, their apices slightly bent outward ; legs slender, 

 tibicC with a row oH short spines on the underside. Node of 

 pedicel high, flat and truncate in front, convex posteriorly, sur- 

 mounted at the lateral angles by two wide-spreading spines curved 

 to the shape of the abdomen, and with two medial short obtuse 

 teeth ; abdomen short and broad. 



Length, ^ 6-7 mm. 



Hah. Burma {Brit. JIus.) ; Tenasserim (Bhu/Jiam) ; Ceylon 

 {Yerbury) ; extending to China, tSiam, the Malayan Peninsula, and 

 down to the Philippines and Molucca. 



469. Polyrhachis affinis. Smith, Cat. vi (1858), p. 6-3 ; Forel, Jour. 



Boiith. X. H. Soc. viii (180.3), p. 27, ^ . 

 Polyrbacliis vicina, Rotjer, J'er::. Form. Gatt. v. Art. {Berl. ent. Zeit. 

 vii, I860), p. 7, ^ . 



^ . Closely resembles P. dives., Smith, but is constantly smaller : 

 the thorax is not so convex, and the pedicel spines not so wide- 

 spreading, with three (not two) short obtuse teeth between them, 

 placed more or less triangularly, one in front, two posteriorly ; 

 the legs are also stouter in proportion, with the tibiae less spinose 

 beneath. 



LetK/th, ^ 4-5 mm. 



Hab. Burma ; Tenasserim {Bingham). 



P. dives and this closely allied species are both very conmion 

 throughout Burma and Northern Tenasserim, but the latter 

 apparently does not go further south. Both build small globular 

 nests of cobwebby material in low bushes, but the nests of P. affinis 

 are much smaller, and the colonies less populous. 



47U. Polyrhachis tibialis, Smit/i, Cat. vi (1858), p. 63, ^: Fore/, Jour. 

 Bomb. N. II. Soc. viii (18y;i), pp. 27 & 35, $ . 

 Polvracliis acasta, Smith, Jour. Linn. Soc. v (1861), p. 100, pi. i, 

 iiiX. 23. 



