3SG Mr. T. D. A. Cockerell — Descriptions and 



be separated, but we should first see Boruean 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. 



Triyona pallidicincta, sp. n. 



^ . — Length nearly 9 mm. 



Head and thorax black, the clypeus, supraclypeal area, 

 labrnm, mundihles, u|)per l)or(ler of proLhorax, tubercles, 

 and tegulae pale ferruginous; antenme l)lack, scape red at 

 extreme base ; sides of face covered with appressed greyish- 

 white hair; vertex with long d;irk fuscous hair; thorax 

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

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

 riorly, and middle of metathorax su (fused ly reddened ; 

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

 mesothorax shining, with three impressed lines, tlie 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. 



Elack, 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 fiagellum beneatli dull red, third antennal 

 joint entirely bright ferruginous ; mesothorax and scutellum 

 shining; teguke dark reddish. Wings hyaline, basally 

 orange-fulvous, nervurts and stigma clear lerruginous ; 

 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, Jiorneo {Baker, 9222). 



ilelated to 7'. erytkrostoiua, Cam., but quite distinct. 



