IPHIAULAX AND CHAOLTA. 31 



apex ; the 3rd. segment is irregularly, obscurely striated ; the 2 

 transverse furrows are rufous, striated. Recurrent nervure 

 interstitial. 



Agrees closely with I. portius Cam.; that species is larger, 

 has the median segment black; the plate on 2nd. abdominal seg- 

 ment larger, obliquely narrowed at base and apex, the 2nd. 

 abscissa of radius distinctly shorter than the 3rd. and the recur- 

 rent nervure not interstitial. 



Iphiaulax amyris, sp. nov. 



Rufous, the abdomen, hind tibiae and tarsi and antennae black; 

 the wings flavo-hyaline to the transverse basal nervure, the rest 

 fuscous, except for a triangular hyaline cloud in the base of the 

 1st. discoidal cellule; the 1st. cubital cellule, except its lower 

 third, along the cubitus, the base of the radial cellule, the parts 

 outside the 1st. transverse cubital and recurrent nervures ; base 

 of stigma largely luteous ; the 3rd. abscissa of radius about 

 two-thirds of the length of 2nd.; the sides of the 1st. abdominal 

 segment above pale yellow ; the greater part of the 2nd. and 

 the base of the 3rd. rufous. $ . 



Length 12 mm. terebra 14-15 mm. 



Hab. Kuching. June. 



Scape of antennae and pedicle rufous below ; the apex of 

 scape incised ; the 3rd. joint slightly longer than the 4th. Face 

 impunctate, thickly covered with long white hair ; temples longer 

 than the scape of antennae, broadly rounded behind ; the centre 

 of occiput transverse. The raised central part of 1st. abdominal 

 segment roundly narrowed behind ; the raised central part keel- 

 ed, the apex closely striated. The 2nd. and 3rd. segments are 

 closely, finely striated, with distinct, oblique lateral furrows ; 

 the basal plate of the 2nd. minute, shining, wider than long ; 

 the keel distinct, reaching to the apex ; suturiform articulation 

 closely striated ; there is a narrower, less strongly striated, 

 furrow on the base of the 4th. segment. 



The abdomen is about as long as the head and thorax united 

 and is not much widened in the middle ; the fore tibiae are as long 

 as the basal 2 joints of tarsi united ; the transverse median ner- 

 vure is received on the outerside of the transverse basal. 



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



