10 HYMENOPTERA FROM BORNEO. 



central part of the segment is not very clearly denned and 

 becomes slightly narrowed towards the apex, near which, 

 on the sides, is a fovea, narrowed at the base and apex, longish, 

 the basal 3 segments, together, are almost as long as the head 

 and thorax. Face smooth in the middle, the sides sparsely 

 punctured ; the clypeus aciculated strongly. Metapleural 

 furrow wide, undivided. Temples rounded not narrowed ob- 

 liquely, as long as the top of the eyes ; the occiput transverse. 

 Apical half of mesonotum flat. Apex of ovipositor broadly 

 white. 9 



Length 13 mm. ; terebra 24 mm. 



Kuching. July. 



Legs with the pubescence moderately dense and long. 

 Apical slope of metanotum with a stout keel bordered by dis- 

 tinct furrows. The outer furrow on the 1st abdominal seg- 

 ment is aciculated, the apex depressed and more shining ; the 

 base and apex of the basal and apical parts stoutly, transversely 

 striated, 1 on each end, the basal stouter than the apical. The 

 black ventral spots occupy almost the whole of the segments 

 Malar space as long as the eyes. 



May be known by the long 2nd abdominal segment with 

 its striated keel extending from the base to the apex, by the 

 stout keel, bordered by furrows, on the apex of the metanotum 

 and by the long malar space. It is allied to I. longiceps which 

 has the apical slope of metanotum striated throughout, and 

 has the 2nd abdominal segment only as long as the 3rd. The 

 ventral marks are larger than usual. 



-J Iphiaulax declinatus, sp. now 



Black, the antennal scape, head and thorax bright red ; the 

 fore legs of a more obscure red ; the middle tinged irregularly 

 with red ; wings fuscous the stigma and nervures black ; the 

 apex of the sheaths of the ovipositor from shortly beyond 

 the middle white. Basal half of 1st abdominal segment 

 smooth, impunctate ; uhstriated ; the raised middle of the apical 

 half with a fine keel down its centre its sides clearly mar- 

 gined ; there are a few irregular striae on them ; the lateral 



Jour. Strait! Branch, 



