428 JOURNAL, BOMBAY NATURAL BISTORT SOCIETY, Vol. XIY. 



lined with black above • the hinder legs obscure fulvous ; the innerside 

 of the coxae, and the basal joint of the trochanters black ; the apex of 

 the tarsi infuscated. Wings clear hyaline, the areolet appendiculated ; 

 the pedicle longer than the lower branches. Abdomen black above, 

 the base of the petiole, its apex more narrowly, and the apices of the 

 second, third and fourth segments, yellow ; the apex of the fourth and 

 the following segments entirely rufous, with their apices narrowly 

 lined with yellow. 



Tryplionides. 

 Lapaphbas, gen. nov. 



Areolet 4-angled, longish, oblique, narrow ; the first transverse cubi- 

 tal nervure is short, straight and oblique ; the second is more than 

 twice t.he length of the first and is roundly curved ; the two are united 

 at the base and at the apex ; the second forms a rounded curve with 

 the cubitus ; the recurrent nervure is at the apex of the areolet almost 

 touching the apical abscissa of the cubitus ; the areolet is nearly three 

 times longer than broad. Radial cellule wide ; the basal abscissa of the 

 radius is straight and oblique ; the apical is longer and roundly curved. 

 Antennae stout, not tapering towards the apex ; the third and fourth joints 

 are equal in length ; the scape is short, scarcely twice the length of the 

 second. Head not quite so wide as the thorax ; the face projects in the 

 centre, the sides being oblique ; the clypeus is roundly convex, separa- 

 ted from the face, but not by a distinct furrow ; its apex is rounded. 

 Mandibles brought gradually to a point to the apex, which is rounded 

 and without a subapical tooth. Eyes large, parallel, separated by a 

 short space from the base of the mandibles. Occiput roundly, but not 

 deeply, incised. Scutellum convex, but not raised above the meso- 

 notum. Median segment with a gradually rounded slope to the apex ; 

 the middle with a longitudinal keel which bifurcates at the apex ; the 

 spiracles are small, circular. Legs of normal size ; the four hinder 

 tibiae armed with two spurs ; the claws are simple. Abdomen roundly 

 convex above, not compressed laterally ; the petiole becomes gradually 

 wider towards the apex ; the spiracles are placed shortly behind the 

 middle ; the apical segment is bluntly rounded. 



Belongs to the Tryphonides. The distinctive characters are the tmi- 

 dentate mandibles ; the oblique narrow longish areolet, the longitudinal 

 keel on the median segment, bifurcating at the apex, and the rather 

 short, wide, radial oellale with its straight, oblique abscissa, of th© 



