DESCRIPTIONS OF NEW BYMENOPTERA. i41 



and third cubital cellules are about equal in length ; the second receives 

 the recurrent nervure shortly, but distinctly, behind the middle ; the 

 second recurrent nervure is received near the apex of the basal fourth. 

 Abdomen smooth and shining. 



LiTHRACiA, gen. nov. 



Wings with two radial and four cubital cellules. Lanceolate cellule 

 contracted ; the basal cellule as long as the apical, the two being 

 separated by slightly less than their own length. Hind wings with 

 two cubital cellules. Antennse slender ; the third joint is slightly 

 longer than the fourth. Clypeus roundly, but not very deeply, incised, 

 Labrum large, somewhat longer than the olypeus. Eyes large, parallel, 

 separated by a small space from the base of the mandibles. Scutellmn 

 rather flat ; the lateral keels are broad and reach to the base of its 

 apical third. Post-scutellum sharply keeled down the middle ; the 

 keel is largest at the base. The hinder coxge are large and reach to the 

 apex of the third segment ; the claws are bifid. 



This genus has the large hind coxae of Macrophya and PacliyprotasiSf 

 but it differs from both in the form of the lanceolate cellule, in the 

 form of the scutellum, and in the keeled post-scutellum. 

 Lithe AciA flavipes, sp. nov. 



Nigra, pleuris subtus sternoque pallide flavis ; pedibus flavis, 

 dimidio apioali femorum posticarum, tibiis tarsisque posticis fulvis j 

 alls hyalinis, stigmate fusco. $ . 



Long : 7-8 m.m. 



Habitat : Simla. 



Antennae slender, black, the scape yellow beneath. Head black, 

 the face, the lower inner orbits, the outer, on the lower half, the 

 clypeus, labrum and mandibles pallid yellow ; the mandibular teeth 

 piceous and black. Thorax black ; the tegulse, a small spot before 

 them, the apex of the middle lobe of the mesonotum, the middle and 

 apex of the scutellum, a line between the cenchri, a larger one in the 

 centre behind them, the lower third of the meso and meta-pleurse and 

 the mesosternum, pallid-yellow. Front and vertex closely rugose ; the 

 frontal depression is raised in the middle. Mesonotum opaque, closely 

 and minutely punctured. The four front legs are pallid-yellow, as are 

 also the hinder coxae, trochanters and basal half of the femora ; the 

 apical half of the femora, the tibiae and tarsi rufo-fulvous ; the apex of 

 the tibiae black, as is also the apex of the last tarsal joint. The wing 



