386 



rOli.MlClD.l. 



h-. jMetanotum witli vertical or obliquely 

 sloped teeth or spines. 

 a^. Node of pedicel witb two long spiues 

 on upper lateral angles and two short 



obtuse teeth between them P.Jcrdviii, p. -109. 



h^. Node of the pedicel quadridentate or 



quadrispinous, the spines typical)}' [p. 409. 



subequal P. inmctillata, 



c^. Node of pedicel trispiuous. 



aK Antenual carinas distinctly dixci- 



gent posteriorly P. /Jiriiia.r, p. 410. 



//. Antennal cariupe not divergent p. 411. 



posteriorly P./raiwnffldi, 



e . Prouotum and mesouotum unarmed ; nieta- 

 notum with a spine on each side. 

 d^. Metanotal spines broad, triangular, 

 pointing backwards. 

 a'^. Head and thorax punctured, not striate. P. cli/jtcata, '^. -ill. 



b^. Head and thorax striate P. rastrata, p. 412. 



b^. Metanotal spines vertical, very small . . P. halidayi, p. 413. 

 B. Thorax wholly unarmed ; pedicel with four 



subequal spiues or teeth P. rastellata, p. 414. 



451. Polyrhachis biliamata, Dmry (Formica), III. Exot. Ins. ii 

 (1773), p. 73, pi. 38, tigs. 7 & 8: Fo)-cl, Jour. Bomb. X. H. Soc. 

 viii (1893), p. 21, ^ . 



^ . Rufous brown, the head, apex of the femora, the tibiae and 

 tarsi, and apices of the thoracic and pedicel spines black, the apical 

 half of the abdomen more or less fuscous, the whole insect 

 covered with a fine sericeous pile mixed with scattered erect hairs ; 



Fig. 1 25. — PoIi/rhachis'Jjihamat a 



pronotal spiues pointing obliquely forward and bent outwards and 

 backwards; mesonotal spines erect, their points directed backwards. 

 Node of pedicel columnar ; above, it rises into two long- spines, 

 parallel for a part of their length from base, then turned outwards 

 and downwards. 



Leiujili, 5 10-12 mm. 



Hah. Lower Burma, Pegu Toma (Allan) ; Tenasserim (Bintj- 

 Jiarn), extending into the Malay Peninsula, Sumatra, Borneo, Java. 



