DELIAS. 149 



subterminal series of whitish spots as on the fore wing, only 

 slightly tinged with yellow. Underside: ground-colour similar 

 but more brownish, markings similar but more clearly and sharply 

 defined ; the subterminal series of spots on both fore and hind wings 

 more or less dentate ; the upper three spots of this series on the 

 fore wing and generally all of the spots on the hind wing yellow ; 

 on the hind wing the dorsal margin and the cell-streak are also 

 yellow, while the discal series of spots are more often than not 

 tinged with the same colour. Antennae, head, thorax and abdomen 

 black, the antennae annulated obscurely with white, the abdomen 

 beneath white. $ . Similar, ground-colour always paler and duller: 

 markings on the upperside less distinct, the subterminal series of 

 spots on the fore wing as a rule farther from the margin than in 

 the <3 . 



Exp. tf $ 70-98 mm. (2-78-3-85"). 



Hub. The Himalayas from Kulu to Sikhim ; Bhutan from 2000 

 to 7000 feet ; Assam : the Khasia Hills ; the hills of Burma 

 and Tenasserhn ; extending into Siam and China. 



Var. flavalba, Marshall, is a very pale variety of this form 

 described originally from Kunavvur. Gradations between it and 

 typical belladonna are formed by D. sanaca, Moore, Z). hearsay* , 

 Butler, and D. clirysorrluea, Vollenhoven. Typical flavalba differs 

 from belladonna as follows : Upperside : white, more or less irro- 

 rated, especially on the outer half of the fore wing, with black 

 scales. JFore wing : the veins all broadly but diffusely bordered 

 with black on both sides ; in some specimens this black bordering 

 to the outer vein coalesces to form a sort of ill-defined postdiscal 

 transverse band, and in all specimens it is most prominent along 

 the discocellulars. Hind wing : white, a subcostal yellow spot at 

 base as in typical belladonna ; the veins along the dorsal margin 

 at base, the median vein, and the discocellulars broadly bordered 

 with black ; an ill-defined very faint subterminal series of black 

 lunules ; the apices of interspaces 1 , 1 and 2 pale yellow. 

 Underside : fore and hind wings similar to the upperside, but 

 the hind wing with the following additional markings : a broad 

 elongate spot or streak in cell, a basal subcostal spot, a discal very 

 curved series of spots, and a subterminal series of spots, all pale 

 yellow. 



Occasionally, both in the typical and in the pale forms, the sub- 

 costal basal spot on the hind wings is orange-red. The pale forms 

 seem to occur only in the N.W. Himalayas, but the typical form 

 also occurs there, the two flying together with other specimens 

 showing all gradations between them. 



Var. ithiela, Butler, is the very dark Eastern form with smaller 

 markings and with the interspaces 1 , 1 and 2 of the hind wing 

 entirely lacking the yellow on the apical half. 



