OF MYSOL, CERAM, WAIGIOU, BOURU, AND TIMOB. 17 



This is very distinct from P. trispinosus, which is much larger and has 

 the anterior angles of the thorax rounded ; the spines on the node of the 

 peduncle are shorter, and the central one shorter than the others. 



26. PoLYRHACHis NiGRiCEPS. P. ferrugineus, nitidus, capite nigro ; 

 thorace spinis duabus acutis antice et postice armato. 



Worker. Length 4 lines. Smooth, shining, and impunctate ; the head 

 oblong, the eyes prominent and placed backwards; the mandibles 

 stout, obscurely ferruginous, and quadridentate at the apex ; the ridges 

 on the front, at the sides of which the antennae are inserted, much 

 elevated, and with a less elevated ridge between them ; the antennae 

 ferruginous. Thorax elongate as in P. sexspinosus, with two acute 

 teeth in front diverging outwards, and two suberect ones behind ; 

 the legs elongate, paler than the thorax. Abdomen paler than the 

 head and thorax, the node of the peduncle incrassate, somewhat 

 wedge-shaped above. 



Hab. Waigiou. 



27. PoLYRHACHis Paxillus. P. niger ; thorace supra deplanato, 

 metathorace et pedunculo spinis duabus longis acutis armatis ; pedibus 

 ferrugineis . 



Worker. Length 3| lines. Black ; the head and thorax finely sha- 

 greened ; the mandibles ferruginous, but obscure, finely striated ; the 

 flagellum fusco-ferruginous ; the extreme base of the scape bright 

 ferruginous. Thorax oblong, narrowed behind, flattened above and 

 at the sides, the lateral margins raised, particularly those of the pro- 

 thorax in front ; the metathorax has two long, slightly bent, acute 

 spines directed backwards over the node of the peduncle, which has 

 also two acute spines directed backwards; the legs ferruginous. 

 Abdomen globose, smooth and shining, with a fine silky fulvous 

 pile which changes colour in difl'erent lights. 



Hab. Martabello. 



Gren. (EcoPHTLLA, Smith. 



1. (Ecophylla smaragdina. Smith, Proc. Linn. Soc. v. 102. 1. (Formica 



smaragdina, Fabr. Syst. Piez. p. 397. 4.) 

 Hab. Mysol ; Timor ; Waigiou ; Gilolo ; Bachian ; Dory ; Aru ; Borneo ; 



Philippines ; Java ; India. 



Fam. PONEEIDtE, Smith. 

 G-en. PoNERA, Latr. 



1. Ponera parallela. Smith, Proc. Linn. Soc. iii. 143. 3. 

 Hab. Waigiou ; Aru ; Celebes ; Mysol. 



2. Ponera laeviceps, Smith, Proc. Linn. Soc. ii. 69. 13. 

 Hab. Waigiou ; Celebes ; Bachian ; Borneo. 



3. Ponera cuprea. Smith, Proc. Linn. Soc. v. 104. 6. 

 Hab. Ceram ; Dory. 



LINN. PEOC. — ZOOLOGY, VOL. VII. 2 



