292 GEOMETRIC^. 



wing black, irrorated with white and ochreous ; the costa much 

 irrorated with ochreous ; an obsolescent antemedial white line ; 

 a medial white band forking from median nervure to costa ; an 

 ochreous fascia from origin of vein 2 to outer margin below vein 4 ; 

 a postmedial white band forking towards apex ; a sinuous sub- 

 marginal series of white specks. Hind wing white, slightly irro- 

 rated with fuscous : a dark spot at end of cell, and postmedial and 

 submarginal maculate bands ; a marginal series of black stria3. 

 Hob. Sikhim. Exp. 46 millim. 



3494. Arichanna biquadrata, Warr. P. Z. S. 1893, p. 423. 



Differs from ramosa in the head, thorax, and abdomen being 

 darker. JFore wing with the ground-colour fuscous brown, striated 

 with black ; some whitish towards inner margin ; a double maculate 

 antemedial band ; large patches at and beyond end of cell ; a 

 double postmedial series of patches ; a patch on costa before apex ; 

 a submarginal series of white specks. Hind wing very pale 

 brownish grey; the underside thickly striated; a cell-spot and 

 postmedial line. 



Hob. Sikhim. Exp. 44 millim. 



3495. Arichanna albovittata, Moore, Lep. Atk. p. 274 ; C. # S. 



no. 3829. 



Differs from ramosa in the fore wing being pale brown, with 

 dark striae and very ill-defined ante- and postmedial dark bands ; 

 the white markings consist of a broad postmedial band, sending 

 an oblique streak to the apex, and an indistinct submarginal line. 

 Hind wing entirely white on upperside, with cell-spot and lunulate 

 postmedial line on underside. 



Hob. Sikhim. Exp., <$ 52, $ 56 millim. 



SECT. II. (Arichanna). Antennae of male serrate and fasciculate ; 

 hind tibiae not dilated ; fore wing without fovea. 



3496. Arichanna plagifera, Wlk. Cat. xxxv, p. 1686 ; C. $ S. 



no. 3833. 



Differs from biquadrata in being yellow-brown. Fore wing 



with the double series of 

 patches less distinct ; 

 some white scales on 

 medial area and beyond 

 the postmedial patches ; 

 a submarginal series of 

 patches and no subapical 

 patch. Hind wing with 

 indistinct cell-spots, post- 

 Fig. m.-Arichannaplagifera, rf. }. P 16 ^ 1 line > and marginal 



band. 

 Hab. Sikhim. Exp. 46 millim. 



