New gênera and species oi liymenoptera from India. 301 



of the Pliygadetionmi or Hemitelini^ both of which hâve lon- 

 gitudinal and trausverse keels, as hâve the two Phillipine 

 species. 



V. Mesostenini. 



15. Suvalta gen. nov. 



Front armed with a sharp spine. Areolet small, square. 

 Median segment rugosely puuctured, at the base with a trans- 

 verse cnrved keel ; the sides witli a spine ; the spiracles large, 

 linear. Post-petiole large, broad; the apex fully 3 times the 

 width of the base. Eyes large, oval, parallel, below reaching 

 to the clypeal foveae. Clypens roundly convex, not separated 

 from the face, Labrum large, projeeting. Maudibles short, 

 cnrved, armed with 2 snbeqnal teeth. Occiput transverse, 

 margined. Temples only very slightly developed. Thorax 

 long, transverse at the base ; the parapsidal furrows distinct. 

 Scutellum convex. Median segment large, with one trans- 

 verse keel. Mesosternum bordered laterally by a deep furrow. 

 Areolet small; the transverse median nervure is received be- 

 hind the trausverse basai. Legs long; the fore tarsi twice 

 the length of the tibiae; the hind coxae large, reaching almost 

 to the apex of the abdomen. Pétiole longer than the 2nd 

 segment ; its basai half much widened ; the spiracles placed 

 near the base of the post-petiole; the segments are closely 

 punctured; there is a smooth dépression on either side at the 

 base (gastrocoeli). There are 8 dorsal segments ; the last is 

 bluntly pointed; the ventral keel is large on the 3id and 4^1^ 

 segments. 



The anteuuae are long and are annulated with white ; 

 the tarsi are thickly spiced; the incision at the base of the 

 anterior is deep; the base of the pronotum is tuberculate on 

 the outer side and the edges raay form teeth ; the apex of 

 the median segment has a straight oblique slope; the pleural 

 tubercles are large; and the hinder legs are longer than usual. 

 The cl a WS are large. 



The présence of parapsidal furrows, of a furrow ou the 

 mesopleurae, the structure of the median segment, the small 

 square areolet refer this gcuus to the Mesostenini. The form 

 of the pétiole is more like what we find in the Platyiiri sec- 

 tion of the Iclmeiimones than in the Cryptini, It cornes near 

 to the American genus Polycyrtus. 



The 2 Indian species may be separated thus : 

 — Fi'ont aud vertex siiiootli, neither puuctured nor striated; the 

 apex of the scutellum and the post-scutellum black, the stignia 

 and nervures black. 



laevifrona. 



