OE MTSOL, CERAM, WATQIOU, BOURU, AND TIMOR. 13 



6. Formica nitida, S7nith, Proc. Linn. Soc. iii. 138. 11. 

 Hab. Mysol ; Am. 



7. Formica pavida, Proc. Linn. Soe, v. 96. 9. 

 Hab. Mysol; Bachian. 



8. Formica laevissima. Smith, Proc. Linn. Soc. iii. 138. 10. 

 Hab. M'^aigiou ; Aru ; Bachian. 



9. Formica longiceps. F. nigra, sparse griseo pilosa ; capite ob- 

 longo, anteunis tarsisque rufo-testaceis ; thorace postice attenuato ; ab- 

 dominis squamula incrassata, supra rotundata. 



Worker. Length 3 lines. Black, and thinly covered with a short gri- 

 seous pile ; the head oblong-quadrate, slightly narrowed anteriorly ; the 

 mandibles short, very stout, and denticulate on their inner margin ; 

 the antenuse ferruginous, with the apical half of the scape black ; the 

 front with a slightly impressed line down the centre. Thorax ob- 

 long, narrowed posteriorly, and slightly compressed ; the prothorax 

 rounded in front, its posterior margin slightly constricted ; the articu- 

 lations of the legs and the tarsi rufo-testaceous. Abdomen ovate, the 

 posterior luargins of the segments narrowly pale testaceous ; the 

 node of the peduncle thick but narrow, with its upper margin rounded. 



Hab. Waigiou. 



*&■ 



Gen. PoLTEtiACHis, Smith. 



1 . Polyrhachis sexspinosus, Latr. Hist. Nat. Fourm. p. 126, pi. 4. f. 21 ^ . 

 Hab. Waigiou ; Aru ; Philippines ; India j Mysol. 



2. Polyrhachis Ithonus, Smith, Proc. Linn. Soc. v. 99. 10. 

 Hab. Waigiou ; Bachian ; Mysol. 



3. Polyrhachis bihamatus, Drury, Ins. ii. pi. 38. f. /> 8 ^ . 

 Hab. Waigiou ; Celebes ; Bachian ; Ceram ; Borneo ; India. 



4. Polyrhachis marginatus. Smith, Proc. Linn. Soc. iii. 139. 3. 

 Hab. Waigiou ; Bachian ; Philippines ; India. 



5. Polyrhachis Diaphantus, Smith, Proc. Linn. Soc. vL 40. 14. 

 Hab. Ceram; Celebes. 



6. Polyrhachis scutellatus, Smith, Proc. Linn. Soc. iii. 140. 7- 

 Hab. Ceram; Aru. 



7 . Polyrhachis rugifrons, Proc. Linn. Soc. v. /O. 3. 

 Hab. Ceram ; Celebes. 



8. Polyrhachis dives. Smith, Proc. Linn. Soc. ii. 64. 19. 

 Hab. Ceram ; Malacca ; Bachian. 



9. Polyrhachis rufofemoratus. Smith, Proc. Linn. Soc. iii. 142. 14. 

 Hab. Ceram; Aru; Waigiou. 



10. Polyrhachis Busiris, Smith. Proc. Linn. Soc. v. 98. 7. 

 Hab. Ceram ; Bouru ; Waigiou ; Celebes ; Bachian. 



