Fossorial Hymenoptera from the Khasia Uills. 85 



the pygidiura testaceous^ sparsely covered with long black 

 hairs; the cpipygium is also testaceous. The spines on the 

 tibice and tarsi are longer and stouter than usual ; the tarsi 

 are thickly spined on the lower side. The first recurrent 

 nervure is received nearer the transverse cubital than usual, 

 more as in Salius. Claws with a small erect tooth. 



There is no transverse furrow on the second ventral seg- 

 ment; the tibiae and tarsi are thickly and stoutly spined. 

 The females and males are similarly coloured. The species 

 comes close to P. bracatus, Biug. 



Pompilus Cumpbelli, sp. n. 



Kiger, dense argenteo-pruinosus ; alls fumatis, basi fere hyalinis. 5 . 

 Long, fere 10 mm. 



The lower part of the front^ the face, and clypeus densely 

 covered with silvery pubescence, smooth and shining ; on 

 the lower part of the f'l out above the antennae is a distinct, 

 moderately wide, and deep longitudinal furrow. The sides of 

 the clypeus are broadly rounded; the palpi black; mandibles 

 at the base thickly covered with silvery pubescence. Thorax 

 densely pruiuose, entirely smooth and shining. Wings from 

 the transverse basal nervure fuscous, with a slight but 

 distinct violaceous tint ; the base almost hyaline ; the hinder 

 wings hyaline, with the apex smoky ; the first and second 

 cubital cellules above are equal in length ; the first and third 

 transverse cubital nervures are roundly curved, the second is 

 straight, oblique ; the first recurrent nervure is received near 

 the base of the apical third, the second very shortly behind 

 the middle of the cellule. Legs pruinose, especially at the 

 base; the spines and calcaria are black; the apices of the 

 tarsi have a fuscous tiut ; the claws are rufous. The abdo- 

 men has a slight bluish tint towards the apex ; the base 

 pruinose ; the third and fourth ventral segments with tufts 

 of longish hair ; the last ventral segment is bluntly keeled 

 down the middle. 



Pompilus implicitanus, sp. n. 



Niger, dense argenteo-pruinosus ; alis fusco-violaceis, cellula cubitali 



V^ longiore quam 2''. J . 

 Long. 13 mm. 



Front and vertex sparsely pilose; the face and clypeus 

 densely covered with silvery pubescence ; the upper part of 

 the front indistinctly, the lower half distinctly longitudinally 



