IPHIAULAX AND CHAOLTA. 35 



Tpkiaulax smenus, sp. nov. 



Dark luteous ; antennae, ocellar region and centre of front 

 the transverse furrows on the abdomen, the base of the 3rd. 

 segment and of the 4th. and 5th. broadly in the centre, black ; 

 the wings to the transverse cubital and the transverse basal 

 nervures yellowish-hyaline ; the b^sal half of the stigma yellow ; 

 its apical and the parastigma black ; the apex of the wings fus- 

 cous, tinged with yellow and violaceous; the transverse median 

 nervure receive! shortly beyond the transverse basal, recurrent 

 nervure interstitial ; the 3rd. abscissa of radius nearly as long 

 as the basal 2 united. 9 . 



Length 8-9 ; terebra missing. 

 Hab. Matang. August. 



Head smooth ; clypeus clearly defined by furrows ; temples 

 straight, oblique ; occiput transverse. Scuteilum not much 

 raised above the mesonotum ; its sides and apex with a long, 

 slightly oblique slope, clearly raised and separated and narrowed 

 towards the apex gradually from the base. Raised central part 

 of petiole rugosely punctured, almost reticulated, its middle 

 indistinctly keeled ; the depressed sides with some oblique keels. 

 The middle of the 2nd. segment is irregularly reticulated, the 

 basal half clearly separated, raised and bounded by a stout keel 

 and slightly, gradually narrowed to the apex ; the basal keel 

 is small, longer than broad, gradually, roundly narrowed to 

 a fine point at the apex and ending in a stout keel which does 

 not reach to the middle of the segment ; the space on either side 

 of the keel is smooth ; at the sides of the basal plate are some 

 irregular curved striae ; the 3rd. 4th. and 5th. segments are 

 stoutly, irregularly, closely, longitudinally striated, the 3 fur- 

 rows beinir also striated ; there is a less distinct, more irregu- 

 larly, striated furrow on the apex of the 5th. segment. 



The abdomen is long--ovate and as long- as the head and 

 thorax united ; the base of the second segment is almost 

 transverse and keeled ; its sides at the base are distinctly 

 depressed and irregularly covered with stout striae. Scape of 

 antennae stout, about 3 times longer than wide ; the 3rd and 4th 

 joints equal in length. 



B. A. Soe., No. 42, 1904 



