66 IIYMENOPTERA FROM SARAWAK. 



head and thorax united, its apex is blunt and marked with white. 

 The legs are long and stout ; the tarsal claws of moderate 

 length ; the tibiae are slightly bent at the base. The clypeus is 

 roundly convex, not very clearly separated behind ; its apex is 

 transverse and has a distinct margin. The mandibles are broad, 

 curved, bidentate at the apex ; lower tooth, small ; the base 

 is broadly raised on the upper side, the raised part forming a 

 tubercle-like mass. The head is much wider than the thorax ; 

 the metajleural keel is complete and is dilated at the base. On 

 the median segment in the middle behind the keel is an 

 incomplete area, open behind. 



In Ashmead's arrangement this genus should come near 

 Mesosteuoideus and Christolia. 



Buodias rujicox'ts. sp. nov. 



Niger ; annulo flagello antennarum abdominisque apice 

 albis; coxis trochanteribusque anterioribus run's; alis fusco- 

 hyalinis, nervis stigmatique nigris 9 • 



Long : 21 mm. terebra 4-5 mm. 



Hab. Sarawak (Shelford). 



Antenna; not quite so long as the body, if anything, 

 thickened towards the apex ; the sixth to thirteenth joints white 

 beneath ; the scape bare smooth and shining. Head entirely 

 black ; smooth and shining ; the front obliquely stoutly striated 

 below the ocelli ; the face coarsely irregularly reticulated. 

 Mandibles black, rufous at the base above. Palpi testaceous. 

 Thorax black ; the sides of the scutellum to near the apex 

 white ; the spines on the median segment dull white. Pro- and 

 mesonotum shining, bare ; the middle lobe aciculated. The 

 scutellum is, if anything, more shining than the mesonotum ; 

 post-scutellum is dull white. The base of the median segment 

 in the middle is stoutly keeled ; the part behind the keel is acicu- 

 lated ; there is one curved keel on the outer side of the stigma 

 and several on the inner side ; the teeth are broad and bluntly 

 rounded at the apex. The middle of the propleune obliquely, 

 and the upper two- thirds of the apex stoutly, striated. The 

 base and the part in the middle is irregularly reticulated, this 

 part being bounded by a keel in front and by an irregular 

 furrow behind ; the lower apical part is irregularly crenulated. 



