202 



form chiefly in the black streaks at apex and along the anterior 

 portion of the termen on the fore wing, which do not extend so far 

 inwards, although the streaks themselves are broader. Hind 

 wing : the series of connected triangular black spots along the 

 termen reduced to an incomplete series of terminal spots or alto- 

 gether absent. Underside : white with an obscure yellowish tinge 

 on the apex of the fore and the whole of the hind wing. Fore 

 wing with an irroration of black scales along the basal half of the 

 costa that spreads into the cell. Hind wing with a short diffuse 

 cross-bar of like scales on the disc. $ . Upperside : as in the wet- 

 season form, but the black markings are more restricted and allow 

 more of the white ground-colour to appear. Underside : similar to 

 the underside in the dry-season form of the J , but the irroration 

 of black scales on the fore wing fills the cell, extends in a narrow 

 streak in interspace 4, and meets an oblique postdiscal lunular 

 band of like scales ; on the hind wing the discal cross-bar of black 

 scaling broader. Antennae, head, thorax and abdomen in both 

 sexes and in both seasonal forms as in libythea. 



Exp. <$ 54-G8 mm. (2-14-2-69"). 



Hab. Sikhim, at low elevations ; the plains of Bengal ; Assam ; 

 Burma; Teuasserim ; extending to Siam. 



Both races seem to meet in the plains of Bengal, but broadly 

 speaking libyihea is the M-estern and southern form, zelmira the 

 eastern form. 



611. Appias nero (PI. XVI, fig. 108), Fdbr. (Papilio) Ent. Syst. iii, 



1793, p. 153 ; Moore (Pieris). Cat. Lep. Mus. E. I. C. i. 1857, 



p. 70: Wallace (Tachyris), Trans. Ent. Soc. (3) iv, 1867, p. 378; 



Elwes (Tachyris), Trans. Ent. Soc. 1888, p. 418 ; Butler, P. Z. S. 



1872, p. 46; Distant, Mhop. Malay. 1885, p. 311, pi. 24, figs. 9, 



10, c?$. 



Pieris thyria, Godart, Enc. Meth. ix, 1819, p. 147. 

 Pieris figulina, Butler, A. M. N. H. (3) xx, 1867, p. 399, pi. 8, 



fig. 1 $ . 

 Tachyris galba, Wallace, Trans. Ent. Soc. (3) iv, 1867, p. 378 ; 



Watson (^Catophaga), Jour. Bomb. N. H. Soc. viii, 1894, p. 499. 

 Appias nebo, Grose-Smith $ Kirby, Shop. Exot. ii, 1894. Appias, 



pi. 1, %s. 1,2, rf. 



c? . Upperside : from vermilion to deep crimson-red, the veins 

 more or less black ; in certain specimens the veins towards their 

 apices, especially on the fore wing, are diffusely shaded with black ; 

 terminal margins of both fore and hind wings and fore wing 

 at apex irrprated and shaded with black scales. Underside : fore 

 wing on apical area and nearly the whole of the hind wing rich 

 chrome-yellow, base and disc of fore wing orange ; costa and dorsal 

 margin of fore, and dorsal margin broadly of hind wing yellow ; 

 veins concolorous. Antenna black, speckled sparsely with white, 

 orange at apex; head, thorax and abdomen black with dark 

 greyish-green hairs. $. Upperside: ground-colour similar, the 

 markings differ as follows : Fore wing : costa narrowly, apex and 

 termen more broadly black ; a short, very oblique black band from 



