IPHIAULAX AND CHAOLTA. 33 



smooth and shining, temples distinctly, roundly narrowed : face 

 rugosely punctured. Middle lobe of mesonotum distinctly sepa- 

 rated, the furrows deep. Abdomen as long- as the thorax, ovate ; 

 the middle lobe of 1st segment is keeled down the centre and 

 there is a keel on eitherside ; the lateral depressions smooth, 

 except for 2 or 3 keels near the apex ; sides of 2nd. segment 

 depressed at the base and obliquely striated ; suturiform articula- 

 tion wide, crenulated ; the other furrow is less clearly defined 

 especially at the sides; the 4th. and 5th. segments have narrow, 

 shallow furrows on the apex. 



The stigma and parastigma are large ; the basal abscissa of 

 the cubitus is roundly curved at the base ; the recurrent nervure 

 is not interstitial : the sculpture of the abdomen appears to vary 

 in its intensity. Characteristic are the hyaline wings and black 

 hind tibiae and tarsi. 



lphiaulctx tenuilineatus, sp. nov. 

 Luteous. the oceUar region and antennae black; wings ob- 

 scure hyaline to the transverse basal nervure, the rest fuscous, 

 the 1st, cubital cellule lighter coloured than the rest, stigma 

 black, yellow at extreme base ; the area on 2nd. abdominal seg- 

 ment small, its width at the base, if anything, longer than its 

 length ; smooth, the sides rounded : the keel stout, reaching to 

 the base of the apical third ; the 3rd, 4th, and 5th. segments 

 roundly projecting at the apex. 



Length 1 1 : terebra 6-7 mm. 

 Hob. Kuching. 



Scape of antennae fully 3 times longer than wide covered 

 with golden hair. Face irregularly rugose. Clypeus above 

 rounded. Malar space as long as the antennal scape, furrowed 

 in the centre ; temples as long as them, rounded behind, not 

 oblique; occiput transverse ; an impressed line on the centre of 

 vertex behind the ocelli. Median segment short. Centre of 1st. 

 abdominal segment rugosely punctured, keeled in the middle : 

 the sides closely striated ; the centre of 2nd. segment reti- 

 culated, the sides closely striated ; suturiform articulation wide 

 closely striated ; there is no distinct lateral apical branch, it 

 being only represented by a fovea ; there is a distinct irregularly 



R. A. Soc, No. 42, 1904. 



