Genera and Species of Hymenoptera. 497 



Antenna: black ; the scape yellow ; the flagellum rufous 

 beneath, densely covered with pale pubescence. Head black, 

 the outer orbits entirely below, more narrowly above, the 

 inner orbits from shortly above the top of the eye-incision 

 (broadly below the incision, more narrowly above), a large 

 irregular mark on the middle of the front extending from the 

 ocelli to the base of the antennae, the clypeus (except round 

 the edges), and an irregular line in the centre above, a curved 

 line on the sides behind the ocelli, and the mandibles, lemon- 

 yellow. The mandibular teeth are black at the apex. 

 Thorax black ; the prothorax at the base, on the sides broadly 

 (especially on the upper half, where it extends to the middle 

 of the pleurae), two lines on the centre of the mesonotum at 

 the base, the sides of the scutellum widely, the base of the 

 postscutellum widely, the median segment (except in the 

 middle), a large irregular mark on the base of the mesopleurae 

 under the wings, an irregular mark on the lower side at the 

 apex, its base prolonged backwards below, and an elongated 

 mark above the hinder coxae, lemon-yellow. The thorax is 

 thickly covered with a pale pile and is impunctate ; the short 

 furrow on the metapleurae black. Legs black ; the fore 

 coxae, the four posterior (except broadly at the base below), a 

 line on the fore femora in the middle in front, the apex 

 broadly below, the apical half of the middle, the apex of 

 the posterior, with a streak in the centre, the fore tibiae 

 behind, and a mark on the middle pair, lemon-yellow. Wings 

 hyaline, the costa, stigma, and nervures black ; the radial 

 cellule with a broad black cloud in front. Abdomen black ; 

 a pear-shaped mark on the side of the petiole, two large 

 irregular marks on the base of the second segment, its base 

 below broadly, its apex all round narrowly, the sides of the 

 third broadly, lemon-yellow. The petiole is about two thirds 

 the length of the second segment and becomes gradually 

 wider towards the middle ; the apical half is of uniform 

 width ; the second segment cup-shaped, widely rounded at 

 the base ; the second cubital cellule is much narrowed above ; 

 both the recurrent nervures are received behind the middle of 

 the cellule. 



Easily known by the yellow marks on the head and meso- 

 notum. 



Icaria rufocollaris, sp. n. 



Nigra ; capite, prothorace, scutello, dimidio apicali petioli apiceque 

 segmenti secundi rufis ; apice clypei, basi postscutelli medioque 

 metanoti flavis ; alis fuscis, nervis nigris, stigmate testaceo. $ . 

 Long. 13 mm. 



Hah. Khasia Hills. Coll. Rothney. 



