COLLECTED AT BACHIAN, KAISAA, ETC. 101 



longer and stouter on the metathorax; the scale of the peduncle qua- 

 drate, armed above with two short spines; the abdomen globose. 

 (Plate I. fig. 24.) 

 Hab. Bachian. 



16. PoLYRHACHis Labella. P. niger ; thorace spinisduabus acutis 

 antice armato ; abdominis squamula spinis duabus longis acutis ar- 

 mata ; tibiis pallide ferrugineis. 



Worker. Length 3 lines. Black : the head and thoras covered with 

 fine silky cinereous pubescence ; the thorax flattened above and lon- 

 gitudinally striated ; the lateral margins raised and produced anteriorly 

 into flat acute spines ; the divisions between the pro-, meso-, and me- 

 tathorax strongly impressed ; the metathorax truncate behind ; the 

 tibiae, except their extreme base, ferruginous; the claws of the tarsi 

 feiTuginous. The abdomen smooth and shining; the node of the 

 peduncle with two long, stout, erect, slightly curved spines, with an 

 acute angle outside their base. (Plate I. fig. 25.) 



Hab. Bachian. 



17. PoLYRHACHis FERVENS. P. capitc abdomincquc nigris, thorace 

 femoribusque obscure ferrugineis ; thorace quadrispinoso ; petioli 

 squamula bispinosa. 



Worker. Length 3 lines. Head and antenna3 black, the face thinly 

 covered with short, glittering, pale pubescence ; the thorax, peduncle, 

 and femora obscure ferruginous, the tips of the latter black ; the thorax 

 flattened above, the margins acute and raised ; the division between 

 the pro- and mesothorax strongly impressed ; the prothorax with two 

 acute, stout, flattened spines ; the metathorax has also two acute, 

 bent spines, which are slightly divergent, their tips black ; the spines 

 on the node of the peduncle long, acute, and curved to the form of 

 the base of the abdomen ; the latter black, and covered with a thin 

 silky changeable pile. (Plate I. fig. 26.) 



Hab. Amboyna. 



Gen. CEcoPHTLLA, Smith. 



Head small; eyes ovate, of modei'ate size, placed laterally about the 

 middle of the head ; ocelli three in a triangle in the males and females, 

 obsolete in the workers ; antennce geniculated, filiform, as long as the 

 head and thorax in the males and females, as long as the body in the 

 workers : 12-jointed in the females and workers, 13-jointed in the 

 males : mandibles porrect, acute, and crossing at their apex, their 

 inner margin denticulate ; labial palpi, 4-jointed, very minute, the 

 basal joint a little longer than the two following, the apical one much 

 shorter ; maxillary palpi 5-jointed, stout, short, and having joints of 

 nearly equal length, except the apical, which is minute. Thorax ovate 

 in the males and females, elongate and very slender in the workers, 

 which sex has the legs elongate and very slender ; wincj/s ample, having 



