40 



MR. F. SMITH ON H i'MENOPTERO US INSECTS 



margins raised, armed in front with two divergent flattened acute 

 spines ; the metathorax truncate, and with the margin at the verge of 

 the truncation acute and slightly raised; the node of the peduncle 

 armed with two long acute divergent spines which curve backwards 

 over the base of the abdomen ; the latter globose. (PI. I. fig. 8.) 

 Hab. Celebes (Tondano). 



11. Polyrhachis Democles. P. niger, aureo-sericeo vestitus ; tho- 

 race ovato, metathorace spinis duabus brevibus obtusis ; squama spinis 

 duabus acutis armata. 



Female. Length 3^ lines. Black, covered with golden pubescent pile, 

 the head and thorax thinly so. The thorax ovate ; the verge of the 

 truncation of the metathorax notched, the lateral angles forming short 

 blunt spines ; the node of the peduncle with two acute short spines, 

 and in the middle of its upper margin with a notch, the angles of 

 which are slightly elevated, forming two minute teeth or spines ; the 

 abdomen globose ; the legs black and shining. (PI. I. fig. 9.) 



Hab. Celebes (Tondano). 



12. Polyrhachis Valerus. P. capite abdomineque nigris ; thorace, 

 squama femoribusque rufis ; thorace quadrispinoso ; petioli squamula 

 bispinosa. 



Worker. Length 3£ lines. Black, with the thorax, scale of the petiole, 

 the coxae, trochanters and femora ferruginous ; the head opake, the 

 face with short cinereous pubescence. The thorax with a thin shining 

 cinereous pile; the spines on the thorax in front short, stout, and acute ; 

 the metathorax with two long slightly divergent spines directed back- 

 wards and tipt with black ; the node of the peduncle with two long 

 acute spines directed backwards over the base of the abdomen, their 

 apex black. Abdomen globose and covered with silky pile, the ex- 

 treme base, ferruginous. (PI. 1. fig. 10.) 



Hab. Celebes (Tondano). 



13. Polyrhachis trispinosus. P. niger, locvis nitidusque ; thorace 

 inermi ; petioli squama trispinosa. 



Female. Length 4 lines. Jet black, smooth and shining; the antenna: 

 long and slender with the apical half ferruginous; the front of the 

 head very convex. Thorax ovate, very delicately striated, the striae, 

 short and irregular, may be called a faint scratching; wings wanting ; 

 the node of the peduncle with three short acute spines above ; the 

 claws of the tarsi rufo-testaccous. Abdomen ovate and very smooth 

 and shining. (PL L fig. 11.) 



liiih. Celebei (Tondano). 



14. Polyrhachis DlAPHANTUS. P. niger ct vestitus pube argentea; 

 thorace quadrispinoso; petioli squamula bispinosa. 



Worker. Length 2\ lines. Black, and densely clothed with silky sil- 

 ferj pile ; the flagellum has the tips of the basal joints, and six or 



