Manchester Memoirs, Vol. xli. (1897), No. 4. 143 



beyond the middle. Antennas black, the scape yellow 

 beneath, sparsely covered with long white hairs. Mandi- 

 bles yellow, the apex black. Thorax covered, except on 

 the scutellum, with long hoary hair ; the scutellum closely 

 and rather finely punctured, except in the middle. Legs 

 black; the femora sparsely in front bearing white hairs; 

 all the tibiae in front and the four front tarsi in front 

 thickly covered with silvery white hairs ; the hinder tarsi 

 thickly covered with black stiff hairs. Wings clear hyaline ; 

 the nervures black ; the second cubital cellule at the top 

 is as wide as the space bounded by the first transverse 

 cubital and the first recurrent nervure ; the second 

 recurrent nervure is almost interstitial. Abdomen black ; 

 the ventral segments more or less piceous; the dorsal 

 segments fringed with depressed silvery hair. 



The <$ wants the black marks on the yellow clypeus ; 

 the flagellum is brownish beneath ; the apical ventral 

 segment is deeply furrowed down the middle, and the 

 sides are also deeply and more widely furrowed; the 

 bounding keels being acute, stout ; the space between 

 them in the centre slightly hollowed. 



Agrees with A . cincta in form and general coloration ; 

 but is smaller ; the hairs on the head and thorax hoary, 

 not fulvous ; and the fasciae on the abdomen are pale 

 silvery, not blue. 



SOCIALES. 

 Trigona BENGALENSIS, Sp. 110V. 



Nigra, nitida ; antennis flavo-testaceis ; abdominis basi 

 late brunneo ; alls hyalinis. 2 . Long. 3 mm. 



Hab. Barrackpore (Rothney), in old tree stumps. 



Head black, shining, the face thickly covered with 

 white pubescence, the mandibles and palpi rufo-testaceous. 

 Antennae entirely rufo-testaceous. Thorax shining, im- 

 punctate ; the pleurae thickly covered with long white 



