68 HYMENOPTERA FROM SARAWAK. 



keel on the lower edge of the metapleurte is broad and plate- 

 like ; the transverse median nervure is received shortly behind 

 the transverse basal ; the areolet is moderately large, about one 

 half longer than broad ; the recurrent nervure is received 

 shortly hehind the middle. 



LlSTKODKUMINI. 



(y Maraces, gen. nov. 



Claws pectinated, scutellum flat throughout, its sides and 

 apex keeled. Areola obliquely narrowed behind, open in front, not 

 separated from the posterior median area ; it is separated at the 

 base from the lateral area. Antemye dilated beyond the middle. 

 Labium hidden. Areolet narrowed at the top, nervure uniting 

 there ; the transverse median nervure is widely distant from the 

 basal. The apex of the hind femora reaches to the middle of 

 the fourth segment; the abdominal segments are aciculated. 



The pronotuni projects above, broadly at the base, more 

 narrowly at the apex ; the apex of the scutellum has a perpen- 

 dicular slope and is clearly raised above the post-scutellum ; the 

 abdominal segments do not project much at their apices. The 

 stump of a nervure on the disco- cubital nervure is almost ob- 

 solete. Clypeus separated from the face, foveate at the base. 

 Mandibles large ; the teeth large, widely separated. Metathoracic 

 spiracles linear, much longer than wide. 



The eyes are large and parallel ; the malar space is large. 

 There are seven abdon.inal segments ; the ventral keel is on the 

 third and fourth segments. The occiput is roundly incised and 

 is keeled above. Median segment, short, rounded gradually 

 behind. 



The pectinated claws refer this genus to the Listrodromim. 

 The claws have long teeth and are toothed uniformly to near 

 the apex. There are no spines on the median segment; the 

 spiracles on the first abdominal segment are elongated; the seg- 

 ments are banded with yellow ; the ovipositor projects largely. 



Of the known genera of Listrodromini, Maraces comes 

 nearest to Neotiipvs which, among other differences, is readily 

 separated from it by the very small, rounded spiracles of the 

 petiole. If it were not for the pectinated claws the genus might 

 be placed with the Joppini. 



