26 IPHIAULAX AND CHAOLTA. 



yellowish-hyaline ; the stigma and nervures luteous ; the costa 

 darker coloured ; the 3rd. abscissa of radius nearly as long as the 

 basal two united ; the 3rd. abscissa of cubitus distinctly shorter 

 than the 2nd.; the 1st fully half the length of 2nd.; recurrent 

 nervure received close to the apex of the 1st. cubital cellule. 9 • 



Length 15 ; terebra 9 mm. 



Hab. Matang. 



Face distinctly punctured round the sides and top; the 

 centre smooth and slightly convex ; the front is less strongly 

 punctured, its middle depressed and furrowed ; temples roundly, 

 obliquely narrowed. Thorax smooth and shining ; the parapsidal 

 furrows deep on the basal half of mesonotum. Scutellum smooth, 

 roundly convex. Basal two segments of abdomen strongly, longi- 

 tudinally striated ; the 1st. if anything, more coarsely than the 

 2nd.; the basal half of the 3rd. finely and closely striated ; lateral 

 furrows of the 1st stoutly , transversely striated; the 2nd. and 3rd. 

 are depressed largely on the sides ; the suturif orm articulation 

 and the furrow on the next segment narrow, deep, closely 

 straited. Legs densely covered with pale hair ; the fore tibiae 

 distinctly longer than the following two, but not so long as the 

 following 3, united. 



Has the long yellow wings of the leptopterus-grouip ; but 

 wants the black stigmal mark ; and hind femora are black, this 

 last being a well-marked feature. 



c. Head, thorax and fore legs rufous, the abdomen and hind 

 legs black ; wings yellowish, obscured with fuscous ; large. The 

 group of I. Sadyates. 



Iphiaulax soranus sp. nov. 



Black ; head, thorax and 4 front legs ferruginous ; wings 

 hyaline, the basal half with a distinct yellowish tinge ; nervures 

 and costa testaceous-yellow, the costa black ; third abscissa of 

 radius slightly shorter than the 2nd.; recurrent nervure received 

 in the apex of the 1st. cubital cellule ; the transverse median 

 nervure on the outerside of the tranverse basal. 9 • 



Length 15 ; terebra 16 mm. 



Hab, Matang. December. 



Jour. Straits Branch 



