34. TPHIAULAX AND CHAOLTA. 



crenulated furrow on the apex of the 5th. segment ; the apices 

 of the 3rd. and following- segments are narrowly pale yellow. 



Allied to 1. astiochus and /. matcwgensis ; may be known by 

 its larger size, longer ovipositor, by the temples being more 

 rounded and not obliquely narrowed, and by the smooth, more 

 clearly defined keel on 2nd. abdominal segment. 



Iphiaulax pater nus, sp. no v. 



Luteous, the flagellum of antennae black ; the wings yellow- 

 ish to the transverse basal nervure, dark fuscous beyond, the 

 stigma and nervures black. 2nd abscissa of radius distinctly 

 shorter than the 3rd.; basal plate on 2nd. abdominal segment 

 wider than long, roundly narrowed towards the apex which has 

 a narrow keel, not much more than half its length. 9 . 



Length 10 ; terebra 5 mm. 



Hab. Kuching. September. 



Scape of antennae fully 4 times longer than wide. Temples 

 roundly narrowed, not quite as long as the antenual scape. 

 Front deeply furrowed. Face rugose, slightly reticulated. Top 

 of clypeus rounded.it is less strongly rugose than the face. 

 Tips of mandibles broadly black. The centre of middle lobe of 

 1st. abdominal segment with 2 stout keels ; the sides are also 

 keeled ; the lateral depression wide, irregularly striated ; 2nd. 

 segment longitudinally rugosely punctured ; the part bordering 

 the area irregularly reticulated ; the sides are distinctly depressed 

 on the basal half and closely, strongly, obliquely striated ; su- 

 turiform articulation wide, deep, crenulated and with >ut an 

 apical lateral branch ; the apex of the 3rd. segment has an indis- 

 tinct crenulated furrow, there is a much more distinct one on 

 the base of the 4th.; one on its apex and on the apex of the 5th. 



The parapsidal furrows are distinct only on the basal half ; 

 the apical half of the mesonotum is flat; the basal 4 points of. 

 fore tarsi as long, together, as the tibiae ; there is a distinct hya- 

 line cloud below the base of the 1st. transverse cubital nervure, 

 the 2nd. discoidal cellule is lighter coloured than the upper one. 



Allied to /. annulitarsis, having a similar plate on the 2nd. 

 abdominal segment, but may be known from it by the much 

 shorter ovipositor, which, in annulitarsis, is as long as the body. 



Jour, Straits Branck 



