COLLECTED IN BORNEO, ETC. 57 



with the apical margins of the segments usually more or less rufo- 



piceous ; the scale erect, ovate and entire. 

 Hab. Borneo (Sarawak). 

 The general form of this species is that of F. compressa ; the antennae 



are shorter, with shorter joints, and the legs are considerably stouter. 

 Hab. Borneo (Sarawak). 



17- Formica tenuipes. F. castaneo-rufa laevis nitida; thorace ovato; 



ahs hyalinis ; squama quadrata supra emarginata. 

 Female. Length 4 lines. Reddish-brown : mandibles stout, and armed 



with five stout black teeth ; antennae pale rufo-testaceous. Thorax 



ovate, smooth and shining ; wings hyaline, the nervures pale testaceous; 



legs pale rufo-testaceous, with the femora much compressed, flattened ; 



the scale of the abdomen quadrate, emarginate above. Abdomen 



ovate, smooth and shining. 

 Hab. Borneo (Sarawak). 



18. Formica camelina. F. nigra, elongataet gracilis; capite postice 

 in collum angustato ; thorace medio compresso ; metathorace supra 

 rotundato ; pedibus elongatis ; abdominis nodo globoso. 



Worker. Length 5 lines. Black : elongate and slender ; covered with 

 a fine silky pile, which has a golden tinge on the thorax and abdomen ; 

 the antennae nearly as long as the body ; the head oblong, much 

 narrowed behind the eyes, the latter nearly round, and placed rather 

 forwards on the face a little higher than the insertion of the antennae ; 

 the carinae above the clypeus with a less elevated one between them, 

 the antennae inserted at the sides of the carinae. Thorax : much 

 narrowed in front, forming a sort of neck, widened and rounded be- 

 hind, broader than the meso- and meta-thorax, the latter somewhat 

 swollen above and elevated above the anterior part of the thorax ; legs 

 very long and sprinkled with fine whitish hairs. The scale of the 

 abdomen, viewed above, pear-shaped, broadest at the base ; abdomen 

 ovate, pointed at the apex, and sprinkled with pale glittering hairs. 



Hab. Singapore. 



19. Formica pallida. F. pallide testacea laevis nitida sparse pilosa; 

 squamula elongato-ovata. 



Worker. Length 2A-3 lines. Pale rufo-testaceous, smooth and shining : 

 the head much wider than the thorax, the vertex widely and deeply 

 emarginate ; the mandibles dark rufo-piceous ; the flagellum and 

 the legs paler than the rest of the body ; the thorax compressed be- 

 hind; the scale narrow and ovate; abdomen subglobose, and thinly 

 sprinkled with long pale hairs; the head and thorax also slightly 

 pubescent. 



Ha b. Borneo (Sarawak). 



Some individuals of this species differ from the form described, in having 

 the head and abdomen of a deeper hue ; the prothorax is sometimes 



LINN. PROC. — ZOOLOGT. 5 



