212 SPHEGIDiE. 



curved tooth. Tn colour P. faaciafipenina difFers in having; the 

 red confined on the head and thorax to the base of the mandibles, 

 the clypeus, scape of the antennae, pronotum, the anterior 

 lateral angles narrowly of the mesonotum, and the extreme apex 

 of the median segment ; on the abdomen the red extends on 

 to the base of the 2nd segment, and the whole anal segment 

 is red. 



S similar but smaller, with the femoral tooth very large, 

 curved, and strong. Wings in both sexes similar to those of 

 P. rvjicornis. 



Hah. Calcutta; Kangoon, Burma; Tenasserim ; Ceylon. $. 

 Length 8-10 ; exp. 16-20 mm. S • Length 7-9 ; c.i;^j. 16-18 mm. 



Genus LIANTHRENA, gen. nov. 



Type, L. Jcohlii, Bingh. 

 Range. Punjab, India. 



Allied to Palarus, Latr. Head transverse, a little wider than 

 the thorax, emarginate posteriorly ; eyes large, ovate, reaching the 

 base of the mandibles below, their inner orbits convergent towards 

 the vertex, but not oblique, widely arched outwards in the middle ; 



mandibles incised on their outer" 

 margin, the apex simple, the inner 

 margin with two blunt teeth about 

 the middle ; clypeus large, its an- 

 terior margin arched ; antennae with 

 the flagellum slightly but distinctly 

 ^f incrassate ; front above the base 



of the antennae convexly raised, 

 gibbous ; ocelli complete, round and 

 subequal, the anterior ocellus being 

 only very slightly larger than either 

 Fio- 'SI ^*°^ ^^ ^^^ posterior ones ; the three 



Lianthrena %ohlii, 2 ■ !• placed in a broad triangle just above 



the frontal convex area ; pronotum 

 depressed below the level of the mesonotum ; scutellum and post- 

 scutellum large, slightly convex ; median segment about the length 

 of the mesonotum, subcylindrical,and abruptly truncate posteriorly ; 

 the episternal suture of the mesopleurae distinct. Legs short, the 

 anterior femora not emarginate at base below ; the anterior tarsi 

 ciliated; the intermediate coxae moderately separate, the inter- 

 mediate tibiae with one apical spine, the posterior four tibiae and tfirsi 

 spinose ; claws simple. Wings, especially the hind wing, broad and 

 ample ; the fore wing with one radial and three cubital cells, the radial 

 cell acutely, diagonally truncate at apex, appendiculate, the cubital 

 cells subequal measured on the cubital nervure, at top the 1st and 

 2nd united a little longer than the 3rd, the second cubital cell 

 receives both recurrent nervures ; the humuli on the hind wing 



