Descriptions of New Species of Iphiaulax 



and Chaolta (Braconidae) from 



Sarawak, Borneo. 



By P. Cameron, 



It is evident that the genus Iphiaulax is, in the Tropics at 

 least, one of the largest of the Parasitic Hymenoptera. Mr. 

 Shelf ord, the collector of the species here described, informs 

 me that he has a large number of species which still remain to 

 be described or named. 



Iphiaulax Foeester. 



a. Luteous, the wings large, yellowish-hyaline, the stigma with 

 a black mark at the base. The group of leptopterus. 



Iphiaulax megaptems sp. nov. 



Dark luteous, the 2nd. a fid following segments of abdomen 

 much darker, almost black ; fkgellum of antennae black ; wings 

 very large, yellowish-hyaline ; a somewhat square black spot at 

 the base of the stigma, commencing shortly behind the cubitus 

 and transverse basal, and backwards extending shorty beyond 

 the cubitus ; there is a narrow cloud on the lower side of the 

 wing at the apex ; the hind wing has the apical fourth fuscous, 

 the cloud on the lower side extending backwards to the middle ; 

 basal 5 segments of abdomen closely, longitudinally striated ; the 

 area on 2nd segment large, reaching to the end ; broad at the 

 base, becoming gradually narrowed to the apex. Apical abscissa 

 of radius long ; more than half the length of 2nd,, which is dis- 

 tinctly shorter than the 3rd., that being not much louger than 

 the basal two united ; the recurrent nervure is received in the 

 apex of the 1st cubital cellule ; the 1st transverse cubital nervure 

 is roundly obliquely curved. 9 . 



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



