398 



g Polyrachis acbilles, Forel, Jour. Bomb. N. H. Soc. viii (1893), 



pp. 24 32, g. 



g . Head, thorax, legs and node of pedicel black, abdomen red 

 or fuscous red ; pubescence wanting. Head, thorax and abdomen 

 finely granulate, opaque. Head equally broad posteriorly and in 

 front, the cheeks straight, not convex ; clypeus convex, broad, with 

 a broad but short lobe, the anterior margin of which is transverse. 

 Thorax elongate, prothorax distinctly 

 broader than the mesothorax ; rneta- 

 thorax laterally compressed, but not so 

 strongly as in P. chalybea, Smith ; the 

 mesonotum wide, convex ; metanotum 

 flat, in front of the spines between 

 them slightly concave; pronotal spines 



Fig 13o-PolyrJ,achi*aMo- slender, pointing forwards, metanotal 

 minalis, % . Thorax. spines broad and flat at base, slender 



above and pointing backwards ; legs 



long, the tibiae in some specimens slightly spinose, in others smooth. 

 Node of pedicel much longer than wide, surmounted by two stout 

 spines, which are slightly curved backwards ; abdomen short, 

 globose. 



Length, g 8-9 mm. 



Nab. Burma: Tenasseriin (Watson, Binyham}; Sumatra, ex- 

 tending to the Celebes. 



I am doubtful whether PotyrJutchis achilles, Forel, is anything 

 more than a variety of P. abdominalis, Smith. The latter varies 

 greatly in colour and in the thickness of the pedicel. P. achilles 

 as described has a very short pedicel, and the tibiae armed with only 

 two or three spines on the inner margin. It is more robustly 

 built, and the metanotum, according to Forel, is not laterally 

 margined, otherwise it resembles P. abdominalis, Smith. 



473. Polyrhachis cedipus, Forel, Jour. Bomb. N. H. Soc. viii (1893), 

 pp. 22 31, g. 



$. Black, with a greenish -bronze tint; head, thorax and 

 abdomen delicately shagreened and rugulose. Head broadly oval, 

 the cheeks almost straight, clypeus convex, subcarinate, its anterior 

 margin transverse. Thorax : pro- and mesothorax of the same 

 width, the latter proportionately longer than in either P. abdo- 

 minalis or P. mutata ; pronotal spines stout, divergent, pointing 

 forwards and outwards ; metanotal spines slender, parallel, sloping 

 backwards ; legs elongate, slender, tibiae compressed. Node of 

 pedicel a little longer than wide, the spines rather short, wide- 

 spreading and curved a little backwards ; abdomen shining. 



Leiwjth, $ barely 7 mm. 



IM>. Ceylon (Yerbury, Green}. 



This species though resembling P. mutata, Smith, in form, is 

 markedly smaller, with the thoracic and pedicel spines shorter and 

 of a somewhat different shape. 



