40 Cameron, Hymenoptera Orientalia. 



whole of the last segment white ; the apical half of the 

 petiole depressed laterally, the depression forming almost 

 a groove ; the second and third segments are pale 

 testaceous. 



OdONTOCRYPTUS, gen. nov. 



Head transverse ; the eyes large, projecting in front, 

 not reaching to the base of the mandibles. Clypeus 

 separated from the face ; its apex ending in two stout, 

 triangular teeth. Mandibles stoutly bidentate, the upper 

 the larger. Mesonotum with the parapsidal furrows com- 

 plete. Scutellum flat ; its sides at the base stoutly keeled. 

 Median segment completely areolated, and with stout 

 spines ; its spiracles small, oval. Petiole longish, dilated, 

 but not abruptly, at the apex ; the spiracles small, round. 

 Wings large ; the areolet pentangular ; the basal nervure 

 interstitial. Legs longish ; the hinder tarsi elongate, 

 spinose ; the fore tarsi incised at the base ; the tibiae twisted 

 at the apex. Ovipositor exserted. The antenna; in the 

 9 are longer than usual ; the third and fourth joints are 

 equal in length. 



The noteworth}' points of this genus are the stoutly 

 bidentate clypeus, stoutly carinate scutellum, unusually 

 long and slender antennae, distinctly areolated median 

 segment, and small, round, metathoracic spiracles. In form 

 it agrees best with the Cryptina, but it differs from that 

 group in the areolated median segment ; it comes 

 nearer to Heiniteles, but that genus may be known from 

 it, apart from its clypeus not being bidentate, by the in- 

 complete areolet, by the shorter antennae, &c. 



Odontockyptus BIDENTATUS, sp. nov. 

 Niger; late flavu-niaculatus ; antetinisnigris, medio albo 

 annulato ; pedibus rnfo-fuivis, coxis trochanteribusque 



