244 



Genus CORYTHURUS. 



Corythurus, Hmpsn. Ill Het. ix, p. 112 (1893). 



Type, C. nocturnus, Hmpsn. 



Range. Ceylon; Tenasserim. 



$ . Eyes naked and without lashes ; palpi slender, curved, and 

 extending backwards over vertex of head, the 3rd joint buried in 

 very long hair from the end of the 2nd joint ; antennae almost 

 simple; thorax and abdomen smoothly scaled, the latter with 

 immensely developed tubular anal tuft; tibiae without spines. 

 Fore wing with the apex rounded ; the cilia non-crenulate. 



$ with the palpi held far apart, naked, the 3rd joint up- 

 turned and long ; abdomen with no anal tuft. 



1824. Corythurus nocturnus, Hmpsn. III. Het. ix, p. 113, pi. 165, 

 figs. 4, 10. 



cJ. Head and thorax pale rufous brown; the collar darker; 

 abdomen fuscous. Fore wing reddish grey, with indistinct double 

 subbasal, ante- and postmedial lines, a dark rufous and fuscous patch 

 between thet wo former, obsolete towards inner margin ; a large 

 rufous submarginal patch also obsolete towards inner margin, and 

 edged by a waved whitish submarginal line and crossed by a black 

 streak from end of cell to the submarginal line ; two short black 

 streaks to near centre of outer margin. Hind wing fuscous brown. 



Fig. 135. Corythurus nocturnus, <$ . \. 



$ . Much greyer, with the patches on fore wing fuscous black ; 

 the lines more distinct ; some patches of olive suffusion and an 

 indistinct reniform spot; underside of fore wing with the cilia 

 white intersected with fuscous. 



The Tenasserim female is darker ; the fore wing more uniformly 

 varegiated with dark grey and olive and without the dark patches. 



Hob. Ceylon; Tenasserim Valley. Exp., <$ 52, $ 42-46 

 millirn. 



