P ] -RA US TID.^—DIA SEMI A . 255 



Abroad it has a wide distribution through Southern and 

 Western Europe, Italy, Dalmatia, Austria, Asia Minor, Aden, 

 Arabia, India, Tropical Africa including the Congo and 

 Nyassaland ; and also South Africa. 



Genus 11. DIASEMIA. 



Antenna simple, densely ciliated ; palpi tufted, long and 

 •drooping ; head rough, thorax smooth ; abdomen very thin ; 

 fore wings long, narrow, pointed, but the discal cell of the 

 ordinary form ; hind wings long and pointed, the cell wide 

 and the cross-bar deeply angulated ; legs very long and 

 thin. 



We have two species, readily discriminated. 



A. White second line of fore wings erect. D. litcralis. 

 A?. White second line of fore wings oblique. 



D. ramhurialis. 



1. D. literalis, Schijf. ; literata, Stand. Cat. — ^Expanse 

 I to f inch (15-22 mm.). Fore wings very narrow, dark 

 brown, streaked with bronzy brown ; stigmata and lines 

 white, the second line once angulated but erect ; hind 

 wings blackish brown with angulated white stripes ; cilia 

 •chequered. 



Antennae of the male simple, brown ; palpi slender, 

 pointed, drooping, dull brown ; head and thorax dark brown, 

 the shoulder lappets long and paler ; abdomen blackish- 

 brown, each segment edged with white. Fore wings narrow 

 costa straight but much arched beyond the middle ; apex 

 sharply angulated ; hind margin oblique and faintly retuse ; 

 dull umbreous with bronzy brown shading and the markings 

 sharply white ; first line an abbreviated stripe from the 

 dorsal margin to the median nervure, having before it a 

 white spot, and beyond it another, larger and somewhat 

 diamond-shaped ; beyond this, but above the median nervure 

 is a triangular white spot, and beneath it a large whitish 



