IPHIAULAX AND CHAOLTA. 43 



Iphiaulax qucesitorius, sp. now 



Black, the head, pro- and mesothorax and scape of antennae 

 red ; the wings fuscous, almost black, the nervures and stigma 

 black ; the basal 3 segments of the abdomen strongly, longitud- 

 inally striated, the area on base of the 2nd. segment not clearly 

 defined opaque, closely striated ; there is an elongated, triangu- 

 lar smooth plate on either side of it ; its inner side with a striated 

 narrow band ; there is an obscure pale oblique streak on the 

 lower side of the 1st. cubital cellule and a small clear hyaline 

 spot below the 1st. transverse cubital nervure, on the outer side 

 of the recurrent. 2 . 



Length 15 ; terebra 13 mm. 

 flab. Kuching. March. 



Scape of antennas fully 3 times longer than wide, longer 

 than the 2nd. and 3rd. joints united ; the 3rd. shortly, but dis- 

 tinctly, longer than the 4th. Face sparsely, strongly punctured 

 along the top and sides and sparsely covered with Ion/ black 

 hair ; the clypeus clearly separated; its top transverse, the side 

 oblique. Malar space twice the length of the 2nd. antennal joint, 

 furrowed in the centre. Temples if anything longer than the 

 antennal scape, not obliquely narrowed, rounded behind ; the 

 occiput transverse. Middle lobe of mesonotum not much raised ; 

 the furrows indistinct ; the apex flat. Median segment covered 

 with longish black hair ; the lower part of metapleurae obscure 

 rufous. The 1st. segment of abdomen longer than the 2nd. 

 broad ; its base not much narrower than the apex ; the raised 

 central part is longer than broad, its base transverse and clearly 

 separated from the basal depression it is strongly aciculated, 

 irregularly striated in the centre ; the depressed outer border 

 smooth, flat and shining. The 2nd. segment has a keel down 

 its centre ; the strige on either side are more curved and irreg- 

 ular : the lateral smooth triangle is bordered on the inner side 

 by a striated furrow ; the outer furrow is wide, deep and ex- 

 tends to the b *se of the apical third ; the suturiform articulation 

 deep closely striated, as is also the posterior lateral branch ; the 

 enclosed space is smooth and shining; the apical border of the 

 3rd. segment smooth and shining ; there is a distinct crenulated 



It. A. Soc, No. 42, 1904. 



