54 MR. smith's OATALOaUE OF HYMEN0PTEE0TJ8 INSECTS 



smooth and shining, with ferruginous stains in front and on the sides ; 

 the metathorax truncate, with ferruginous spots at its base above ; 

 the legs ferruginous, the tibiae and basal joint of the tarsi darkest ; 

 the wings flavo-hyaline, the nervures pale rufo-testaceous. Abdomen 

 elongate-ovate, with the margins of the segments and the apex rufo- 

 piceous ; the scale ferruginous, with its superior margin very slightly 

 emarginate ; the head with a thin fulvous pubescence ; the abdomen 

 with a few scattered pale hairs. 

 Hab. Borneo (Sarawak). 



7. Formica pilosa. F. nigra, dense sericea pilosa ; squama ovata. 

 Worker. Length 3 lines. Black, covered with a fine cinereous pile : the 



head large, much wider than the thorax ; eyes ovate, placed laterally 

 rather high on the head ; the anterior part of the face truncate, the 

 sides produced beyond the anterior margin of the clypeus ; a faintly 

 impressed line above the base of the clypeus, which terminates in a 

 shallow fovea on the front. Thorax compressed posteriorly. Abdo- 

 men ovate, with a short pale pubescence ; the scale narrow, incras- 

 sate, and terminating above in a blunt point. 

 Hab. Borneo (Sarawak). 



8. Formica ruficeps. F. nigra; capite thoraceque antice ferrugineis. 

 Worker. Length 4 lines. Head ferruginous, smooth, shining, and 



much wider than the thorax ; the mandibles and scape black, the 

 apex of the former obscurely ferruginous ; the flagellum pale rufo- 

 testaceous. Thorax black, more or less ferruginous anteriorly, much 

 compressed towards the metathorax; the tips of the joints of the 

 legs ferruginous, as well as the tarsi. Abdomen black, smooth and 

 shining ; the scale ovate, acuminate at its apex above ; the legs and 

 apex of the abdomen with a scattered short pale pubescence. 



Worker minora about one-third smaller ; only differs otherwise in having 

 the mandibles ferruginous. 



Hab. Borneo (Sarawak). 



This species bears a strong resemblance to the F. erratica of Europe. 



9. Formica badia. F. castaneo-fusca ; thorace postice attenuate, 

 abdominis squamula incrassata, abdomine ovato. 



Worker. Length 2^-3^ lines. Chestnut-brown ; head subovate ; the 

 eyes ovate, lateral, placed high on the head towards the vertex. Tho- 

 rax rounded in front, compressed behind ; the metathorax obliquely 

 truncated ; the scale of the abdomen subconical, incrassate, slightly 

 rounded in front and truncate behind. Abdomen oblong- ovate, the 

 apex fuscous. 



Hab. Singapore ; Borneo (Sarawak). 



This species has much the appearance of a species of Polyergus ; 

 but the mandibles are toothed at the apex: the palpi I have not 

 examined. 



