Fossoi'ial Ilymenoptera from the Khasia Hills. 81 



its sides distinctly keeled ; the ventral segments are more 

 broadly banded with black. 



A species easily known by the roundly-curved transverse 

 basal nervure. The male is similarly coloured to the female. 

 The colour of the wings varies : in some examples it is deep 

 fuscous violaceous, the brownish tint being absent. The 

 species comes close to S. fenestratus, Sm. 



Salius brevipennis, sp. n. 



Niger, dense aureo-hirtus, basi anteunarum late ferruginea ; pedi- 

 bus abdorainisque apice rufo-ilavis ; alia fusco-violaceis, nervis 

 stigmateque nigris. $ . 



Long. 18 mm. 



Belonj>s to the section with bifid claws and with " wings 

 fuscous brown or black, with generally a brilliant purple-blue 

 or green effulgence/' and to the group with " hyaline spots in 

 the fore wings.^^ It comes nearest to S. placidus, Bmgh., 

 which differs from it in having the hyaline cloud in the first 

 discoidal and the second submedial cellules, and differs 

 further in the pile on the head and thorax being " silvery 

 grey," not golden; the head largely marked with yellow; 

 the coxse black and the abdomen only black at the base, not 

 black, fulvous at the apex. 



The five basal joints of the antennae ferruginous, the rest 

 black. Head black, thickly covered with golden pubescence ; 

 the clypeus ferruginous, black at the base ; the apex trans- 

 verse, the sides rounded ; the apex of the labrum rounded, 

 fringed with long fuscous hairs; the mandil)les rufous; the 

 apes deep black ; the palpi testaceous yellow ; the eyes 

 distinctly converge towards the bottom; the ocelli are sepa- 

 rated, from the eyes by a greater distance than they are from 

 each other. Prothorax large, the base transverse, the sides 

 rounded, above thickly covered with depressed golden pubes- 

 cence, as is also the mesonotum. The scutellum and post- 

 scutellum not much raised. The median segment has on the 

 apex an oblique slope and is stoutly transversely striated. 

 Pro- and mesopleurse covered with golden pubescence and 

 with shallow punctures ; the upper part of the metapleurae 

 at the base smooth and limited by an oblique keel ; the base 

 below this smooth, opaque, and marked with a few scattered 

 punctures, over the coxte strongly punctured ; the apical 

 division strongly obliquely striated, punctured near the 

 spiracles. Mesosternum thickly covered with golden pubes- 

 cence and furrowed down the middle. Wings uniformly 

 fuscous violaceous; on the base of the discoidal cellule is a 



