COLLECTED IN BORNEO, ETC. 51 



and the scutellum with ochraceous pubescence ; the coxae and claw- 

 joint of the tarsi rufo-testaceous. Abdomen shining black, its extreme 

 base, and beneath entirely, pale testaceous. 

 Hab. Malacca (Mount Ophir). 



5. Trigona l^Viceps. T. nigra; capite Isevi et nitido, antice pube 3, 

 cinerea tecto; thorace nitido, alis subhyalinis, abdomine castaneo- 



rufoa 



Worker. Length H line. Head and thorax black : the face, above 

 the insertion of the antenna?, smooth and shining ; the antennae rufo- 

 testaceous ; the clypeus with a hoary pubescence ; its anterior margin, 

 and also the mandibles, ferruginous. Thorax smooth and shining, the 

 metathorax highly polished ; the wings subhyaline and iridescent, the 

 stigma and nervures ferruginous. Abdomen ferruginous, smooth 

 and shining. 



Hab. Singapore. ? >'^. ^^M^'^ 



6. Trigona APiCALis. T. nigra; clypeo antennisque ferrugineis, parte 3, 

 dimidia basali alarum fusca, apice hyahno. 



Worker. Length 2i lines. Head and thorax black; the abdomen 

 nigro-piceous ; the clypeus, and lower parts of the face, testaceous- 

 yellow ; the mandibles ferruginous ; antennae pale ferruginous ; the 

 head covered with cinereous pile. Thorax : the tegulse testaceous ; 

 the wings from the base to the stigma brown, beyond which they are 

 hyaline ; the scutellum covered with short stiff black hairs ; the sides, 

 and beneath, with scattered black pubescence ; the legs dark rufo- 

 piceous; the posterior tibiae pale, flattened and widened towards 

 their apex ; the outer margin thickly fringed with black pubescence ; 

 the disk of the thorax with a cinereous pile ; the apex of the abdomen 

 pale rufo-testaceous. 



Hab. Borneo (Sarawak). 



7. Trigona canifrons. T. nigra; facie pube cinerea vestita; aUs -2? 

 hyalinis. 



Worker. Length 2i lines. Black : the face covered with cinereous 

 pile. The thorax thickly covered above with sooty-black pubescence, 

 which is long and tufted on the scutellum ; the tegulae black and 

 shining; the wings hyaline, the nervures testaceous; the posterior 

 tibiae, with their upper margin, thickly fringed with black hairs. Ab- 

 domen shining black. 



Hab. Borneo (Sarawak). 



8. Trigona collina. T. nigra; antennis basi ferrugineis; alis basi 3 

 fuscis apice albis. 



Worker. Length 2^ lines. Black : the scape, flagellum beneath, and 

 its apex, as well as the mandibles, ferruginous ; the clypeus with a 

 pale testaceous spot in the middle ; the wings brown at their base as 



