HYMENOPTERA. 



107 



beiiifj, that, with the exception of its mandibles and the apex of 

 the abdomen, it is bhick ; the posterior margin of the node of the 

 peduncle is furnished with three sharp spines, not serrated. 



Hab. Borneo (Sarawak). 



6. Pachycoxdyla piliventris. B.M. 



Worker. Length 6 hues.— Black : head oblong and rugose ; 

 the mandibles an(i antenuie obscurely ferruginous. Thorax of the 

 same form as in P. crassimda, rugose and obliquely truncated 

 posteriorly ; legs obscurely fusco-ferruginous, the apex of the 

 joints brighter. Abdomen : the posterior margin of the node of 

 the peduncle not serrated ; the first and second segments grooved 

 as in P. crassinoJa, but less coarsely so ; the apical segments 

 rufo-testaceous ; the abdomen covered with rather long pu- 

 besencc; most dense at the ajiex. 



Hab. Australia (Adelaide). 



7- PaCHYCONDVLA BISPIXOSA. 



Worker. Length fi lines. — Closely resembling P. rufipes, the 

 mandibles, legs and antennrc being red ; the thorax and head 

 simdarly sculptured ; the metathorax truncate, the margin of the 

 truncation with a stout curved spine on each side ; the node of 

 the psdunclu has its posterior margin denticulate, with a longer 

 tooth at the lateral angles and a tooth beneath ; the first and 

 second segments of the abdomen longitudinally grooved ; the 

 a[)ical segments rufo-testaceous. 



Hab. .\ustralia? (Coll. F. Smith.) 



8. P.\CHYCOXDYLA ASTLTA. B.M. 



Worker. Leagth 5 lines. — Black : the mandibles, flagelhuu. 

 tibiae and tarsi ferruginous; the head oblong and delicately 

 striated longitudinally. Thorax elongate, rounded anteriorly and 

 obliquely truncate posteriorly ; the prothorax fttriated, the stria- 

 somewhat obliquely curved ; the meso- and metathorax slightly 

 rugose. The node of the abdomen compressed, thick and bent 

 forwards, the upper margin rounded, the auterior and posterior 

 surfaces transversely striat.-d. Abdomen oblong, slightly pilose 

 anil shining ; the posterior margins of the segments rufo-piceous. 

 the apex ferruginous. 



Hab. .\ustralia. 



