SMITH ON HTMBKOPTEBA OF ABU I0LAKD0. 147 



thorax deeply strangulated posteriorly, the metathorax not spined; 



the femora thickly swollen in the middle and very slender at their 



base and apex. Abdomen ovate, the first node of the petiole oblong, 



the second globose. 

 Hab. Aru. 



There is considerable variation in intensity of colouring in examples 

 of this species, the thorax and legs being sometimes pale ferruginous ; 

 in the specimen described they are dark ; every shade of gradation 

 occurs in different individuals. 



4. PoDOMYRMA BASALis. P. fusco-fcrruginca ; abdominis basi pallide 

 testacea ; femoribus medio incrassatis, basi tenuibus. 



Worker. Length 3 lines. Obscurely ferruginous, the scape of the 

 antennae, the base of the femora and the tibise pale fen*uginous ; the 

 base of the abdomen pale testaceous y the head and thorax with deep 

 coarse longitudinal furrows; the flagellum blackish-brown towards 

 its apex, with the extreme tip pale. Thorax : the anterior margin 

 slightly rounded with the lateral angles very acute; the femora 

 very thickly incrassate in the middle ; the apex of the tibise ferru- 

 ginous. Abdomen smooth and shining; the basal half pale testa- 

 ceous, the apical half and the following segments black ; the nodes 

 of the petiole rugose ; the first node elongate, with a short acute tooth 

 at the base above, and a blunt one beneath. 



Hab. Aru. 



Gen. Mtemioa, Latr. 



1. Myrmica parallela. ilf . rufo-ftdva ; antennis pedibusque pal- 

 lide testaceis ; abdomine fusco-ferrugineo ; capite thoraceque longitu- 

 dinaliter striatis. . 



Worker. Length 1 line. Head and thorax ferruginous and longitudi- 

 nally and evenly striated; antennae and legs pale rufo-testaceous. 

 Thorax margined at the sides, the disk slightly convex, the anterior 

 margin transverse, the lateral angles acute ; the metathorax with two 

 short spines; abdomen dark fusco-ferruginous, the nodes of the 

 petiole subrugose ; club of the antennae 3-jointed. 



Hab. Aru. 



2. Myrmica scabrosa. M. nigra; capite thoraceque scabrosis, meta- 

 thorace bispinoso, abdomine ovato laevi. 



Worker. Length 1 line. Black ; the head, thorax, and nodes of the 

 petiole roughened ; the mandibles, flagellum and tarsi rufo-testaceous ; 

 the lateral angles of the prothorax acute, the sides narrowed sUghtly 

 to the base of the metathorax, the spines on the latter acute ; nodes 

 of the petiole globose. Abdomen ovate, smooth and shining; club 

 of the antennae 3-jointed. 



Hab. Aru. 



