62 me. smith's catalogue of iiymenopterotjs insects 



verse sutures, and having a curved decline to the verge of the trunca- 

 tion of the metathorax ; legs elongate, with a thin clothing of erect 

 pubescence. Abdomen smooth, shining, and sprinkled with erect 

 black hairs ; the surface of the peduncle in front subquadrate, nar- 

 rowed at the base, the superior angles with long acute divergent spines, 

 which have a minute spine at their base outside. 

 Hab. Borneo (Sarawak). 



12. Polyrhachis modestus. P. niger ; thorace ovato, metathorace 

 spinis duabus brevibus obtusis, squama spinis duabus acutis retrorsum 

 curvatis armata. 



Female. Length 3 lines. Black : head and thorax very delicately 

 rugose ; the flagellum rufo-piceous beneath towards the apex. Thorax 

 ovate ; the metathorax with two short blunt spines ; wings hyaline, 

 faintly yellow ; the nervures pale testaceous ; the apical joints of the 

 tarsi obscurely ferruginous. Abdomen globose, smooth and shining ; 

 the scale quadrate, armed above at the lateral angles with two acute 

 spines which curve backwards. 



Hab. Singapore. 



13. Polyrhachis Pandarus. P. opacus niger; capite thoraceque 

 subverrucatis, thorace antice posticeque abdominisque squama spinis 

 duabus longis crassis acutis armatis. 



Worker. Length 4 lines. Black : head and thorax coarsely shagreened ; 

 the palpi pale testaceous ; head below the antenna; finely shagreened ; 

 the head with a sharp recurved margin posteriorly. Thorax : not 

 flattened above ; two long, stout, acute, divergent spines in front, and 

 two similar ones posteriorly ; the scale quadrate, with two long acute 

 divergent spines, directed backwards ; legs without spines or hairs ; 

 the calcaria, at the apex of the anterior tibiae, pale testaceous, those 

 on the intermediate and posterior pairs black. Abdomen smooth, 

 opake-black. 



Examples of this species from Singapore have the abdomen rusty-red. 



Hab. Borneo (Sarawak). Philippine Islands. Java. 



14. Polyrhachis Hector. P. opacus niger ; thorace spinis duabus 

 longis acutis antice et postice armato ; squama quadrata spinis dua- 

 bus longis curvatis ; abdomine obscure ferrugineo. 



Worker. Length 4 lines. Opake-black : delicately shagreened ; the 

 head narrowed posteriorly; the thorax armed with two long acute 

 divergent spines in front, and two slightly divergent ones behind ; the 

 scale quadrate, with two long divergent spines above which curve 

 backwards ; the legs without spines or pubescence, the calcaria black. 

 Abdomen with an obscure ferruginous tinge. Thorax not flattened 

 above. 



Hab. Singapore. 



15. Polyrhachis l^evigatus. P. niger, laevis, nitidus; metathorace 



