44 P- CAMERON. HYMENOPTERA I. 



abdomen and the hind femora, tibiae and tarsi, black; the ventral surface white, the segments 

 with 2 black spots in the centre ; wings fuscous, slightly violaceous, the nervures and stigma 

 black; the body smooth and shining. Q. 



Length 7 mm. ; terebra 3 mm. 



Vertex sparsely covered with fuscous, the face more thickly with longer paler pubes- 

 cence ; the frontal keel distinct, deep. Apex of mandibles black. The depressed basai part 

 of the ist abdominal segment bears a few longitudinal striae ; the raised apical part is depressed 

 at the base in the middle; this part bearing 2 or 3 indistinct transverse keels. The area on 

 the 2 nd segment is smooth, slightly longer than its width at the base, its apex produced into 

 a short, stout keel. Suturiform articulation crenulated, stoutly and widely in the middle, more 

 narrowly on the sides; the apical branch is smooth; the furrows on the other segments are 

 smooth; there is no oblique furrows on the sides of the 3^ and 4A segments. 



The abdomen is ovate, as long as the head and thorax united and broader than the 

 latter. The scutellum is fully longer than it is broad at the base. The temples are rounded, 

 obliquely narrowed. 



This species cornes close to Bracon spilogaster Cam. from New-Guinea. That is a large r 

 and stouter species, has the scutellum shorter than its width at the base ; the basai segment 

 of the abdomen is not striated, the apical abscissa of the radius is shorter compared with 

 the basai two, the middle lobe of the mesonotum is not so clearly separated; and the plate 

 on the 2"<i abdominal segment is shorter, its apex not reaching so much beyond the middle 

 but with the apical keel longer and narrower. Both species are intermediate between Bracon 

 and Iphiaulax. 



Iphiaulax Foerster. 



1. Iphiaulax papuanus sp. nov. 

 Orum, 21 — 23 May. 



Black; the head yellowish testaceous, the pro- and mesothorax red, the fore legs rufo- 

 testaceous; the middle reddish, their coxae and basai joint of trochanters black; the antennal 

 scape obscure red ; wings uniformly dark fuscous, the stigma black. Q. 



Length 17 mm.; terebra 27 mm. 



Head covered with pale pubescence ; the face with the hair longer and sparser; there 

 is a raised, roundish tubercle on either side of the apex of the clypeus, with a round hole 

 in its centre, as is found, in some of the other Malay species. Mandibles with nearly the 

 apical two-thirds black, the base yellowish testaceous. Middle lobe of mesonotum clearly 

 raised. First abdominal segment in length nearly twice the width of the apex, smooth, the 

 basai two-thirds with an indistinct keel down the middle; the apical half of the latéral fur- 

 rows with 7 widely separated transverse keels. The basai plate on the 2nd segment in length 

 twice the width of its base; finely obscurely striated, the keel reaches to the apex of the 

 segment; the space on either of the central keel is, inwardly, irregularly transversely, coarsely 

 striated, the striae running into reticulations; outwardly, irregularly, more closely longitudi- 

 nally striated ; the 3^ segment is closely, strongly, longitudinally striated ; the 4* has the 

 basai half finely closely striated; the 5A more obscurely striated at the base; the rest of 



