14 MR. r. SMITH ON HTMEKOPTEEOUS INSECTS 



11. Polyihachis seiicatus, Guer. Voy. Coq. Zool. ii. 203; Atlas Ins. 

 pi. 8. f. 2, 2 a, b, c,d,^. 



Hab. Maitabello ; Waigiou ; Am ; New Hebrides ; Mysol. 



12. Polyrhachis "Valerus, Smith, Proc. Linn. Soc. vi. 40. 12. 

 Hab. Waigiou ; Celebes (Tondano). 



13. Polyi-hachis serratus. Smith, Proc. Linn. Soc. iii. 140. 6. 

 Hab. Waigiou; Aru. 



14. Polyrhachis Orsyllus, Smith, Proc. Linn. Soc. vi. 39. 8. 

 Hab. Ceram ; Celebes (Tondano). 



15. Polyrhachis sculpturatus, Smith, Proc. Linn. Soc. v. 70. 4. 

 Hab. Timor; Celebes. 



16. Polyrhachis Acasta, Smith, Proc. Linn. Soc. v. 100. 14. 

 Hab. Bouru; Bachian. 



17. Polyrhachis Dolomedes. P. niger, capita thoraceque sub- 

 opacis; abdomine nitido; thorace inermi ; pedibus ferrugineis; abdo- 

 minis squamula spiuis duabus acutis armata. 



Female. Length 3;^ lines. Black, the front very prominent ; the ridges 

 under which the antennae are inserted much elevated; the extreme 

 base and apex of the scape, the apex of the five basal joints of the 

 flagellum, and the following ones entirely ferruginous ; the mandibles 

 ferruginous. Thorax oblong-ovate ; the metathorax truncate behind; 

 the lateral angles of the verge of the truncation acute, or subdentate ; 

 the legs obscure ferruginous, their articulations pale. Abdomen glo- 

 bose, shining and slightly sericeous ; the node of the peduncle armed 

 above with two short, stout, acute spines. 



Worker. Length 2-i- lines. Altogether more shining and smoother than 

 the female ; the front very prominent ; the antennjie and legs pale 

 ferruginous ; the base of the abdomen obscurely fen-uginous ; the 

 thorax compressed ; the meso- and metathorax flattened above. 



Hab. Ceram. 



Mr. Wallace says, " Nest on a leaf, small, oval, and of papery texture." 



18. Polyrhachis Trophimus. P. niger, capite thoraceque longitudi- 

 naliter striatis ; metathorace petiolique squamula bispinosis ; pedibus 

 obscure ferrugineis. 



Worker. Length 2 lines. Black ; the head shining and finely striated 

 longitudinally. Thorax flattened above and longitudinally striated, 

 slightly shining ; the suture between the meso- and metathorax strongly 

 impressed ; the metathorax with two slightly elevated acute spines, 

 those on the peduncle are longer, stouter, and curve to the shape of 

 the sides of the abdomen ; the legs dark ferruginous. Abdomen 

 globose, smooth, and shining. 



Hab. Ceram. 



19. Polyrhachis Alpheus. P. niger, capite thoraceque minute 



