386 Mr. T. D. A. Cockerell — Descriptions and 



be separated, but we should first see Bornean workers. 

 I have not seen any publication of T. geissleri, but it may 

 have appeared in Germany since the mails from that country 

 to America were discontinued. 



Trigona pallidicincta, sp. n. 



cj . — Length nearly 9 mm. 



Head and thorax black, the clypeus, supraclypeal area, 

 labium, mandibles, upper border of prothorax, tubercles, 

 and tegulae pale ferruginous ; antennae black, scape red at 

 extreme base; sides of face covered with appressed greyish- 

 white hair; vertex with long dark fuscous hair; thorax 

 with short pale hair at sides, but dorsally it is mainly 

 fuscous; scutellum with a pale (tegumentary) patch poste- 

 riorly, and middle of metathorax suffused ly reddened ; 

 front not polished, except a triangular area in front of ocelli; 

 mesothorax shining, with three impressed lines, the lateral 

 ones deep. Wings hyaline, faintly reddish, stigma ferrugi- 

 nous, nervures fuscous. Legs very pale reddish basally; 

 otherwise dark brown. Abdomen brown, darker apically ; 

 basin of first segment, and its broad apical margin, pale 

 testaceous, the light colour sharply defined ; base of third 

 segment broadly pallid. 



Singapore (Baker). 



Resembles T. castanea, Bingham, but the wings are quite 

 differently coloured. There is a rather strong superficial 

 resemblance to the African T. conradti, Fr. 



Trigona melanotricha, sp. n. 



Worker. — Length about 7'5 mm. 



Black, very robust, with rather long and coarse black 

 hair ; head broad : clypeus and mandibles obscure reddish ; 

 hair of face dark, the sides with thin appressed brown hair ; 

 front polished and shining; cheeks with thin brown pile ; 

 scape in front and flagellum beneath dull red, third antennal 

 joint entirely bright ferruginous ; mesothorax and scutellum 

 shining ; tegula? dark reddish. Wings hyaline, basally 

 orange-fulvous, nervures and stigma clear ferruginous ; 

 transverse-cubital nervures obsolete. Legs black, with 

 coarse black hair; hind tibia very broad, fringed with very 

 long black hair. Abdomen short and broad, shining, obscure 

 reddish basally. 



Sandakan, Borneo (Baker, 9222). 



.Related to T. erythrostoma, Cam., but quite distinct. 



