404 A Preliminary Bevision of the Genus Trisuloides 



S.W. Sumatra : Barisan Range, west slopes, 2,500 feet, October- 

 November, 1921 (C, F. and J. Pratt), five S 3 ; North Korintji Valley, 

 5,000 feet, September-October, 1921, one $ . 



The $ type of this species is in coll. Tring Mus. There is one $ 

 from Selangor in coll. Brit. Mus. 



Genus 2. Disepholcia gen. nov. 



External characters (pi. XVII, figs. 3, 4) : — 



Palpus straight, loosely scaled ; segment 1 narrow, flattened at base 

 (simple). Wings slightly glossy. Fore wing broad, with the cell about 

 one-half length of wing. Hind wing with blue sheen. Abdomen 

 moderately robust, the crests on three and four moderately well- 

 developed. $ antenna bipectinate ; ? antenna subserrate. 



Genitalia : — 



Valve lanceolate, anteriorly finger-shaped, and with two processes 

 on the inside. Penis not armed with cornuti. Uncus short ; apex 

 broad, with a short point. 



1. Trisuloides caerulea Btlr. (Type.) 



Genitalia : — 



Valve lanceolate, and anteriorly finger-shaped. Each fold develops 

 a short, thick, and smooth process. The ventral process is slightly 

 pointed and crosses the dorsal one. Uncus short and broad, apex with 

 a point ; no keel developed. 



Genus 3. Trisuloides Btlr. 



External characters (pi. XVII, figs. 7-10) : — 



Palpus curved, compactly scaled ; segment 1 narrow, with single 

 point at base. Wings slightly glossy. Fore wing broad, with cell 

 about one-half length of wing. Hind wing bright yellow. Abdomen 

 robust, with the crests on 3 and 4 generally well developed. $ antenna 

 bipectinate for almost the whole length of shaft. 2 antenna typically 

 serrate. 



Genitalia (pi. XVI, figs. 3-8) :— 



Valve lanceolate, with a toothed process on the inside, this process 

 finger-shaped. Penis not armed with cornuti ; sheath bearing a small 

 heart-shaped appendage attached on the ventral side about midway. 

 Uncus broad, with a wide apex and a slight dorsal keel. 



