DIPHTHEEA. — PERCIANA. 295 



1967. Diphthera pallida, Moore, P. Z. S. 1867, p. 46, pi. 6, fig. 6; 



C. $ S. no. 1762. 

 Diphtera fasciata, Moore, P. Z. S. 1888, p. 408 ; Butt. III. Ret. vii, 

 pi. 122, fig. 1. 

 f / . ■ . . \ -} ^ 



Differs from vigens in being pale silvery green. Fore wing 

 with the black spot beyond the white claviform streak large ; the 

 shade beyond the post-medial line slight : the series of specks 

 submarginal instead of marginal ; cilia chequered black and green. 

 Hind wing greenish white, with traces of a cell-spot. Underside 

 greenish white, with two short black bands from costa of fore wing 

 and one medial short band from costa of hind wing. 



The form fasciata has the basal markings of fore wing almost 

 obsolete ; the antemedial line obsolescent except the recurved 

 portion on inner margin ; the orbicular, reniform, and claviform 

 obsolete ; the postmedial line much less prominent with no 

 submarginal specks beyond it ; cilia only tipped with black at 

 emargi nations. 



Hab. Dharmsala ; Sikhim. Exp. 46 millim. 



1968. Diphthera discibrunnea, Moore, P. Z. S. 1867, p. 46, pi. 6, fig. 14; 



C. $ S. no. 1760. 



Head and thorax bright green slightly tinged with black ; palpi 

 black at sides ; abdomen very pale fuscous. Fore wing bright 

 green, with a subbasal black line expanding into a large patch 

 below median nervure ; some detached black spots representing the 

 antemedial line ; orbicular and reniform almost obsolete, with a 

 blackish band between them from costa to median nervure ; a short 

 broad blackish band on outer edge of reniform ; a broad blackish 

 waved postmedial band ; a series of blackish marginal lunules. 

 Hind wing fuscous white, with indistinct postmedial waved line 

 and broad diffused fuscous submarginal band. Underside with 

 postmedial line and diffused submarginal band to both wings ; 

 hind wing with a cell-spot. 



Hab. Sikhim ; JNagas. Exp., $ 36, $ 42 millim. 



1 Genus PERCIANA. 

 Perciana, Wlk. Cat. xxxiii, p. 812 (1865). 



Type P. marmorea, Wlk. 



Range. Punjab ; Sikhim ; Manipur. 



Palpi obliquely upturned, the 2nd joint reaching vertex of head, 

 the 3rd long and naked ; antennae with fascicles of cilia in male ; 

 a sharp crest on metathorax ; the patagia with long upturned 

 scales from their ends ; abdomen with a very long dorsal tuft on 

 2nd segment and small tuft on 3rd ; a flattened anal tuft ; tibiae 

 moderately hairy. Pore wing with the apex nearly rectangular, 

 the outer margin angled at centre ; veins 8 and 9 anastomosing to 

 form the areole. Hind wing 'with veins 3, 4 and 6, 7 from cell. 



