58 Mr. P. Cameron on new Fossorial Hymenoptera 



base, convex, the sides with an oblique slope; the apex in 

 the middle ending in a stout triangular tooth. Eyes almost 

 parallel, hardly converging at the top, where they are sepa- 

 rated by slightly less than the length of the third antennal 

 joint. Mesonotum aciculated ; the furrows deep, moderately 

 wide, and stoutly and closely crenulated throughout ; there is 

 another crenulated furrow along the sides. The three central 

 keels on the metanotum reach near to the apex and end 

 in a reticulated space ; the central keel is straight ; the 

 outer curved, converging towards the apex; the space en- 

 closed by them is transversely striated, the striai being dis- 

 tinctly separated ; the sides are more closely striated ; the 

 lateral apical tooth is large, smooth, rounded, and slightly 

 narrowed on tlie top ; the apex of the segment has an almost 

 perpendicular slope and is thickly covered with sliort white 

 pubescence, the upjier half rough, the lower finely transversely 

 stiiated and lurrowed down the middle. The propleuraj 

 aciculated ; near the bottom is a narrow furrow, above the 

 middle is a wider, deeper, crenulated furrow, wiiich does not 

 extend quite to the end. The mesopleurae opaque, hollowed 

 above behind the tubercles, the middle with a broad belt of 

 large deep irregular punctures ; the lower edge is bordered 

 by a distinct crenulated furrow. The upper half of the meta- 

 pleurse largely reticulated, the lower smooth. Wings hyaline ; 

 there is a broad smoky band occupying the whole of the 

 radial, of the second cubital, the apex of the first cubital, 

 and extending on to the apex of the second discoidal; the 

 ai)pendicular cellule is distinct, elongate, open at the apex ; 

 the first cubital cellule is, on the lower side, longer than the 

 other two united; the first recurrent nervure is received in 

 the middle, the second in the basal third of the cellule. Legs 

 black ; the penultimate joint of the fore tarsi is more dilated 

 than the others ; the base of the metatarsus is slightly incised ; 

 the claws bifid, the basal claw the smaller. Abdomen with 

 the petiole as long as the dilated part of the segment, narrow, 

 closely longitudinally striated. 

 Khasia Hills. 



Mutillidae. 



The species hero described have been taken chiefly at 

 Baiiackpore, Bengal, by ]\Ir. G. A. J. Rothney. It is uu- 

 ft)rtunate that the male Mutillidai should have to be described 

 without reference to the females ; but in our present state of 

 knowledge there is no other couise open to us. I am, how- 



