98 ME. smith's descriptions of nTMENOPTEBOUS INSECTS 



2. Polyrhacliis marginatus. Smith, Proc. Linn. Soc. 1859, iii. 139. 

 Hab. Aril ; India ; Philippine Islands ; Bachian. 



3. Polyrhachis dives, Smith, Proc. Linn. Soc. 1857, ii- 64. 

 Hab. Malacca; Bachian. 



4. Polyrhachis sericatus, S»ii<A, J|)/}eM(^. C«^. Form. p. 200 j Proc. Linn. 

 Soc. iii. 139. 



Formica sevicata, Guer. Voy. Coq. Zool. ii. 203 ; Atlas, Ins. pi. 8. f. 2. 

 Hab. Dory ; New Hebrides ; Aru. 



5. Polyrhachis sexspinosus, La^r. Hist. Nat. Fourm. p, 126.pl. 4. f.21. ^ 

 Hab. Dory ; Aru ; Philippine Islands ; Java. 



6. Polyrhachis Charaxus. P. capite thoraceque nigris ; antennis 

 pedibusque ferrugineis ; abdoraine castaneo-rufo; squama spinis duabus 

 acutis armatis. 



Worker. Length 2j lines. Head and thorax black, the head shining, 

 very finely and closely punctured ; the clypeus anteriorly, the man- 

 dibles and antennae ferruginous, the latter palest towards the apex. 

 The thorax flattened and finely rugose above, the lateral margins 

 raised ; the metathorax obliquely truncate, with two minute acute 

 spines at the verge of the truncation ; the legs ferruginous, the apical 

 joints of the tarsi palest. Abdomen globose, chestnut red ; the scale 

 of the peduncle armed with two acute spines. (Plate I. fig. 14.) 



Hab. Bachian. 



Taken in a small ovate papery nest on the underside of a leaf. 



7. Polyrhachis BusiRis. P. niger, Isevis, nitidusque ; thorace in- 

 ermi ; petioli squamula quadrispinosa. 



Worker. Length 3 lines. Jet-black, smooth and shining. Thorax 

 rounded above, obliquely truncate behind. Abdomen globose; the 

 node of the peduncle armed with four short acute teeth. (Plate I. 

 fig. 15.) 



Hab. Dory ; Bachian. 



8. Polyrhachis Acantha. P. niger, pube cinereo-sericea vestitus ; 

 thorace spinis acutis antice et postice armato ; squama sjiinis duabus 

 longis curvatis. 



Worker. Length 2| lines. Black : clothed with a thin silky cinereous 

 pile ; the disk of the thorax rounded ; the spines in front short, stout, 

 and acute ; those on the metathorax long, divergent, and slightly 

 curved inwards; the spines on the peduncle are stout, acute, and 

 curved to the shape of the base of the abdomen. The abdomen 

 globose. (Plate I. fig. 16.) 



Hab. Bachian. 



9. Polyrhachis Merops. P. niger, Isevis, nitidus; thorace antice 

 spinis duabus longis acutis armato ; femoribus et pedunculo ferrugineis. 



Worker. Length 3 2 lines. Black, smooth, shining and very thinly 

 covered with a changeable i)ile ; the mandibles shining black, longi- 



