Fossorial Ilymenoptera from the Khasia Ilills. 55 



three central keels on the median segment are of equal 

 length and reach to the apical area, which has two irregular 

 longitudinal and two irregular transverse keels ; the central 

 part has the transverse striae stout, those on the part border- 

 ing it closer and finer ; on the two outer they are stouter 

 and more widely separated ; the lateral teeth are broad at 

 the base. The upper half of the mesopleurae is stoutly 

 irregularly longitudinally striated ; the lower strongly and. 

 closely punctured. The basal part of the metapleurae irre- 

 gularly shagreened ; the lower irregularly obliquely striated. 

 Legs black ; the four anterior tibite and femora more or less 

 blue in front ; the tarsi are long and slender, with the joints 

 not dilated. Abdomen black, very smooth and shining. 

 The basal segment of the abdomen is narrowed into a narrow 

 distinct petiole, which is clearly separated from the greatly 

 dilated apical part, and it is nearly as long as it. The 

 species is related to C. Consianccce, Cam., but is much larger 

 than it or ^. ruficornis, Cam. 



Amjmlea? trichiosoma, sp. n. 



Blue, marked with greenish tints ; the wings fuscous, with 

 two transverse cubital nervures ; the head obliquely narrowed 

 behind the eyes ; the pleurae coarsely reticulated. 



Long. 13 mm. ? . 



Antenme black ; the scape dark blue; the third and fourth 

 joints e([ual in length. The vertex and the upper half of 

 tlie front are dark blue ; they are strongly irregularly 

 striated, and iriegularly punctured on the sides ; the striae 

 behind and on the sides of the ocelli are curved, on the 

 front they are twisted. The face and clypeus are minutely 

 punctured ; the centre of the clypeus is keeled and ends at 

 the apex in a short blunt tooth. The part behind the eyes 

 is straight and is obliquely narrowed, and ends in a distinctly 

 separated neck, which is not much more than one half of the 

 space behind the eyes. Mandibles black. The head is 

 somewhat thickly covered with long black hair. Prothorax 

 two-thirds of the length of the mesothorax, distinctly but 

 not very closely punctured and covered with long black 

 hair; the prosternum rugosely punctured. Mesonotum 

 strongly, irregularly, and deeply punctured ; the punctures 

 run into reticulations behind ; the mesopleuraj coarsely 

 closely reticulated. Mesosternum coarsely transversely reti- 

 culated. Median segment transversely striated ; the three 

 central keels reach to the base of the apical third of the 

 segment ; the keel outside these reaches to the apex of the 



