34 HYMENOPTERA FROM SARAWAK. 



shining-, sparsely pilose. Wings smoothy-fuscous from the trans- 

 verse basal nervure ; behind it yellowish-hyaline ; the lower 

 part of the stigma to the transverse cubital nervure luteous. 

 The central part of the petiole is rugose and longitudinally keel- 

 ed down the centre ; the four following segments are closely 

 rugosely punctured ; the basal keel extends to near the apex ; 

 it is of nearly equal width to near the apex ; its sides are keeled 

 and it is distinctly raised ; the segment on either side of it is 

 depressed and bears three stout, irregularly curved keels, the 

 lateral depression is shallow ; the sides of the segment outside 

 it forms three ridges. The furrows on the other segments are 

 longitudinally striated ; the basal branch of the suturiform 

 articulation is larger, broader, and more oblique and more dis- 

 tinctly striated than the apical. 



Iphiaulax astiochus, sp. no v. 



Long: 9; terebra 1-2 mm. 



Hab. Sarawak, Borneo (R. Shelford). 



Antennae entirely black. Front and vertex smooth, shining 

 and bare ; the face irregularly rugose ; the mandibular teeth are 

 black. Thorax smooth and shining; the median segment is 

 thickly covered with long pale hair. Wings dark fuscous; 

 yellowish-hyaline behind the transverse basal nervure. 

 The central area of the petiole is rugosely punctured; 

 it is slightly narrowed towards the apex. The middle 

 segments are closely rugosely punctured; the central keel 

 extends to the suturiform articulation; it is of equal 

 width throughout; is longitudinally striated, with the sides 

 raised and irregular ; the basal lateral depression is narrow at 

 the base, much wider at the apex and is stoutly striated at the 

 base of the dilated part, which turns inwardly at the apex; the 

 suturiform articulation is wide and deep; its basal lateral fork is 

 more oblique and narrower than the apical ; the other furrows 

 are closely striated ; the basal more strongly than the apical; 

 the apical segments are smooth and are more yellowish in tint 

 than the others. 



Spinaria curvispina, sp. no v. 



Rufa, thorace spna collaris curvata, abdominis dorso stri- 

 goso; capite. thorace pedibusque anterioribus rufis; abdominis 



