536 Mr. P. Cameron on new 



rounded and narrowed at the base and apex, and a longer, 

 wider apical one, with a stout keel in the middle. The 

 tegulre are brownish on the outer side. 

 Allied to M. burmanica, Bingh. 



Labus armatus, sp. n. 



Niger; elypeo, scapo antennarnm subtus, basi mandibularum, linea 

 pronoti, maculisque 2 scutelli flavis ; alis fusco-hyalinis, stigmate 

 nervisque nigris. 



Long. 9 mm. d . 



Bab. Khasia Hills. Coll. Rothney. 



Antennse covered with a pale down ; black, the scape 

 yellow below ; the terminal hook rufous. Head black; the 

 clypeus (except narrowly round the edges) and the base of 

 the mandibles to near the second tooth lemon-yellow. Front 

 and vertex closely and somewhat strongly and uniformly 

 punctured all over; covered with silvery pubescence; the 

 lower part of the front and the eye- incision covered with 

 silvery pubescence. Clypeus sparsely punctured; the apex 

 obliquely narrowed from the eyes to the middle, where there 

 are two minute black teeth. On the mandibles are one large 

 apical tooth, followed by two blunter, more rounded ones, of 

 half the length of the apical; the third has a much shoiter 

 tooth or tubercle near its base. Palpi black. Thorax black ; 

 a broad line on the pronotum with its teeth, two marks on 

 the base of the scutellum, rounded and slightly narrowed on 

 the apex, from the outer side to the inner, yellow. Pro- and 

 mesonotum closely, uniformly, and rather strongly punctured. 

 Scutellum more sparsely punctured than the mesonotum. 

 The tooth on the postscutellum large, sharply pointed towards 

 the apex. Median segment sparsely punctured ; the central 

 furrow becoming gradually wider towards the apex. Pro- 

 pleurre strongly punctured above, below smooth, aciculated ; 

 mesopleui£e similarly punctured, except at the base beneath ; 

 metapleurse more sparsely punctured than the meso-, espe- 

 cially towards the base. Legs black, the four anterior tibiae 

 in front and the basal joint of the four front tarsi yellow. 

 Abdomen black ; the apex of the petiole above and of the 

 second segment all round yellow ; the petiole has the basal 

 half coarsely punctured ; the punctures are large and longer 

 than broad; below, the punctures extend nearer to the apex. 

 The whole insect is covered with a pale pile. Wings fuscous- 

 hyaline; the stigma and nervures black; the apex of the 

 radius is blunily rounded, it is distinctly curved upwards at 

 the second cubital cellule ; the tegulae are yellow, broadly 

 black in the middle. 



