OF CEBAM, CELEBES, TERNATE, AND GILOLO. 



43 



angle, and a shorter acute spine outside at their base. (PL I, 

 fig. 19.) 

 Hab. Celebes (Tondano). 



21. Polyrhachis Hippomanes. P. niger ; capite thoraceque opacis ; 

 abdomine nitido ; thorace spinis duabus longis acutis postice armato ; 

 squama spinis duabus longis curvatis armata. 



Worker. Length 2\ lines. Black, the head and thorax opake, and 

 obscurely tinged with blue. Thorax rounded above, the anterior margin 

 unarmed ; the metathorax with two long divergent spines ; the node 

 of the peduncle with two similar spines, which are curved and extend 

 over the base of the abdomen ; the trochanters and the intermediate 

 and posterior coxae pale rufo-testaceous ; the legs elongate. The 

 abdomen globose. (PI. I. fig. 20.) 

 Hab. Celebes (Tondano). 



22. Polyrhachis Lycidas. P. niger, pubescens ; thorace supra de- 

 planato, spinis duabus anterioribus ; petioli squamula quadrispinosa. 



Worker. Length 4 lines. Black with a thin silky cinereous pile, and 

 sprinkled over with erect pale pubescence, which covers the antennae 

 and legs also ; the extreme tip of the antennae pale rufo-testaceous, 

 the palpi of the same colour; the head and thorax longitudinally 

 striated ; the prothorax with two stout acute spines ; the margins of 

 the thorax slightly elevated and extremely acute at the angles of the 

 truncation of the metathorax, sub-dentate ; the node of the peduncle 

 with four acute spines. Abdomen globose, with the base truncate. 

 (PI. I. fig. 21.) 



Hab. Celebes (Tondano). 



23. Polyrhachis Zopyrus. P. niger; prothorace bispinoso ; petioli 

 squamula quadrispinosa. 



Worker. Length 2f lines. Black, with a thin cinereous silky pile. 

 Thorax, the anterior margin transverse, with the lateral angles very 

 acute, and slightly produced into short acute spines ; the sides of the 

 thorax flat, the disk slightly convex, with the margins acute and 

 slightly raised ; the metathorax truncate, the angles of the truncation 

 slightly produced, forming short acute spines ; the anterior tibiae more 

 or less ferruginous within. Abdomen globose, the node of the peduncle 

 with the superior margin transverse, the lateral angles raised into short 

 acute teeth or spines ; the sides of the node oblique outwardly, then 

 abruptly inclined inwards to its base ; at the angle thus produced is a 

 short acute spine. (PI. I. fig. 22.) 



Hab. Celebes (Tondano). 



24. Polyrhachis Eurytus. P. niger cinereo-sericeo vestitus ; tho- 

 race subovato, spinis duabus antice armato ; squama emarginata. 



Female. Length 3f lines. Black, and covered with silvery grey pile, 

 which is most dense on the face, metathorax, and abdomen. Thorax 



