122 Ih.H.E.Tnvncvon the 



angles, the three longitudinal carinse parallel, the median 

 one not nearly reaching the apex, the surface of the posterior 

 truncation shining and almost smooth, witli a median carina 

 on the apical half and slightly concave, the sides of the 

 segment coarsely striated. Abdomen shining, sparsely and 

 shallowly punctu red, most sparsely on the two basal 

 segments j the basal segment rather slender, rounded 

 anteriorly, the sides of the segments tliinly clothed with 

 grey pubescence. Epipygium strongly punctured at the 

 base, the punctures confluent longitudinally, broadly smooth 

 at the apex. The second recurrent nervure is received close 

 to the middle of the second cubital cell. 



Black; the mandibles at the apex fusco-ferruginous ; the 

 apex of the pygidium and the spines of the tibia? and tarsi 

 dark testaceous, the antenna beneath fuscous. Wings fusco- 

 hyaline, nervurcs dark brown. 



Length 12 mm. 



(J. Clypeus finely and closely punctured, the extreme 

 apex smooth and shining and narrowly truncate, rather 

 closely covered with cinereous pubescence. Head finely 

 and closely ])unetured, most sparsely round the ocelli. 

 Pronotum finely and rather sparsely punctured, the posterior 

 margin very broadly smooth and shining ; tlie propleurae 

 smooth and shining, the mesopleurte shallowly and rather 

 closely punctured. Mesonotum sparsely, but deeply, punc- 

 tured ; scutellum and postscutellum sparsely punctured. 

 Median segment subopaque, punctured-rugulose, the three 

 longitudinal earina3 ]):irallel, the median one not reaching 

 much more than halfway to the apex, the sides of the 

 segment striated. Abdomen shining, sparsely punctured, 

 most sparsely on the two basal segments; the basal seg- 

 ment long and slender, with a small tubercular prominence 

 on each side near the base. The radial cell extends beyond 

 the second cubital cell, which receives the second recurrent 

 nervure at the middle. 



Black ; the spines of the tibiie and tarsi testaceous. 

 Wings hyaline, iridescent, nervures black. 



Length 8—9 mm. 



Bab. Gyangtse, Tibet, 13,000 ft. (B. J. Walton). 



Type in B. M. Described from 4 (^ and 4 ? . 



Very near siuilaensis, Gam., but the first abdominal seg- 

 ment is much more elongate in both sexes, it is more sparsely 

 punctured, and the shape of the anterior margin of the clypeus 

 is different in the male. 



