COLLECTED IN BOENEO, ETC. 75 



the abdomen subovate, widest towards the extremity, the apex 

 pointed. 

 It is quite possible that this may prove to be the male of C. antennafus. 

 but I do not feel authorized in placing them together. 



Gren. Cbematogastek, Lund. 



1. Crematogaster anthracinus. C. aterrimus, lsevis etnitidus; 

 tarsis rufo-piceis. 



Worker. Length Inline. Jet-black, smooth and shining; the face 

 with a few delicate striae ; the extreme base of the scape, and the apex 

 of the flagellum, pale testaceous. Thorax : flattened above, opake 

 and finely rugose ; the metathorax armed on each side with an acute 

 spine ; the tarsi pale testaceous, with the claw -joint darker. Abdo- 

 men : heart-shaped, smooth, shining and impunctate. 



Hab. Singapore. 



2. Crematogaster brunneus. C. pallide castaneo-rufus, laevisniti- 

 dusque ; thorace spinis duabus acutis armato. 



Worker. Length 2 lines. Reddish-brown, or castaneous, varying a 

 little in colour; head smooth and shining, wider than the thorax, 

 about the same width as the abdomen, slightly emarginate at the 

 vertex, and more deeply coloured. Thorax : the disk concave and 

 finely striated longitudinally ; the metathorax deeply concave and 

 furnished on each side with a stout acute spine ; the legs, with the 

 tips of the joints and the tarsi, pale testaceous. Abdomen : heart- 

 shaped, smooth and shining ; the first node heart-shaped, flattened 

 above; the second node globose, with two tubercles above. 



Worker minor. About one-third smaller, and of a pale testaceous 

 colour ; the abdomen darker at the apex. 



Hab. Borneo (Sarawak). 



3. Crematogaster cephalotes. C. testaceus ; capite thorace duplo 

 latiore ; spinis metathoracis brevibus et acutis. 



Worker. Length l-l|line. Testaceous; head very large, smooth and 

 shining ; the antennae, clypeus and mandibles, pale testaceous. Tho- 

 rax : rounded anteriorly, deeply constricted in the middle ; in front 

 rugose, with a smooth shining space before the constriction ; the meta- 

 thorax deeply excavated, produced laterally into an acute spine on 

 each side; the tibiae and tarsi pale testaceous. Abdomen heart- 

 shaped ; the basal node flattened anteriorly, with the sides angulated ; 

 the second node globose. 



Worker minor. Differs in having the head proportionably smaller, and 

 the thorax smooth and shining above. 



Hab. Borneo (Sarawak). 



0* 



