greened; the thorax armed with two long stout spines at the angles 

 of the prothorax, and two similar ones at the posterior angles of the 

 metathorax; the scale of the ahdomen with two long stout spines 

 diverging and curved backwards. Abdomen globose, of a dull opake 

 rusty-red. 



Hab. Singapore. Java. 



Specimens from Java, in the British Museum, have the abdomen black. 



5. PoLYRHACHis CONSTRUCTOR, P. nigcrj thoracc ovato, spinis 

 duabus minutis antice armato;. abdominis squamula spinis duabus 

 armata. 



Female. Length 3| lines. Black : finely rugose ; the palpi pale testa- 

 ceous ; the mandibles obscurely rufo-piceous ; the apex of the an- 

 tenna? pale rufo-testaceous. Thorax : the anterior angles of the pro- 

 thorax acute ; the metathorax not toothed ; the apex truncate, the 

 truncation finely rugose ; wings subhyaline, faintly yellow ; the ner- 

 vures pale testaceous. Abdomen globose; the scale quadrate, with 

 two very stout, short, curved spines above ; the insect is very thinly 

 covered with a fine short silky ashy pile, most apparent on the 

 abdomen. 



Hab. Borneo (Sarawak). 



6. PoLYRHACHis RUFicoRNis. P. nigcF; antcnnis maudlbulls pcdibus- 

 que ferrugineis, abdominis squamula spinis duabus longis armata. 



Female. Length 4 lines. Black : the antennae and mandibles ferru- 

 ginous. Thorax elongate-ovate ; wings subhyaline and iridescent, 

 the nervures testaceous ; the legs ferruginous, the coxae black. Ab- 

 domen : the base more or less ferruginous ; the scale with two stout 

 divergent spines above, which cm've slightly backwards. 



Hab. Borneo (Sarawak). 



7. PoLYRHACHis CARBONARius. P. aterrimus, nitidus; capite tho- 

 raceque supra aciculatis, abdominis squamula supra fornicata. 



Worker. Length 2 lines. Jet-black, shining : the head and the thorax 

 above, longitudinally aciculate, the thorax most finely so. Thorax : 

 the anterior margin of the thorax with a short acute spine at the 

 lateral angles ; the truncation of the metathorax smooth and shining ; 

 the legs elongate, with acute spines or hairs ; the calcaria pale testa- 

 ceous ; the anterior tibiae obscurely ferruginous in front. Abdomen 

 ovate, smooth and shining ; the scale incrassate, narrowed to a sharp 

 edge above, the superior margin wide and arched, not spined. 



Hab. Malacca. 



8. PoLYRHACHis TEXTOR. P. nigcr ; thorace elongato, supra planato, 

 dentibus duobus parvis antice et postice armato ; abdominis pedunculo 

 unispinoso. 



Worker. Length 3^ lines. Black ; delicately rugulose ; the eyes ovate, 

 lateral, placed high on the sides of the head; the front with two 

 raised carinae, at the sides of which the antennae are inserted ; the 



