106 LEPIDOPTERA INDICA. 



IXIAS PIRENASSA. 

 Plate 583, figs. 1, la, lb, Ic, ^ ? (Wet^season Brood), Id, le. If, Ig, S 9 (Dry-season Brood), 



Ih, li, Ij, Ik, ^ ? (Extreme Dry-season Brood). 

 Tliestias Pirenassa, Wallace, Trans. Ent. Soc. 1867, p. 39.5, pi. 9, f. 4, ^ (Dry Form). 

 Jxias Pirenassa, Butler (part), Ann. Mag. Nat. Hist. 1898, p. 140. 

 Ixias Pyrene, Bingham (part). Fauna of Brit. India, Butt. ii. p. 193 (1907). 



Wet^season Brood (Plate 583, figs. 1, la, lb, Ic, $ ?). 



Male. Upperside yellow. Forewing with tlie orange subapical fascia moderately 

 br(jad, its black inner border narrow, the base of costal margin blackish scaled. Hind- 

 irlng with a broad black marginal baud. Underside pale yellow unmarked. 



Female. Upperside white. Forewing with the subapical fascia white, its black 

 inner border irregular ; the base of the costa dusky-grey scaled. Hindwing with the 

 marginal baud broad. Underside pale yellow. Forewing with a slightly defined 

 dusky discocellular spot, transverse discal spots and a patch at posterior angle. Hind- 

 iciag with slightly defined costal spot, and discal spots with whitish centres. 



Expanse, ^ 2 to 2i, ? 2 inches. 



Dry-season Brood (Plate 583, figs. Id, le, If, Ig, ^ ?). 



Male. Upperside. Forewing similar to Wet form. Hindwing with the marginal 

 band narrower than in that form. Underside. Forewing with a small blackish 

 discocellular spot, and transverse discal spots. Hindwing with a small discocellular 

 spot, and a discal series of spots, the costal and two medial-discal being the largest and 

 wliite-centred. 



Female. Upperside pale yellow. Forewing with the subapical fascia orange, its 

 black inner border irregular. Hindwing with a broad marginal band. Underside 

 brighter yellow than in the Wet form. Both wings with the markings more developed 

 than in the Wet form, the discal spots being whiter centred. 



Expanse, J $ 2 to 2^ inches. 



Extreme Dry-season Brood (Plate 583, figs. Ih, li, Ij, Ik, $ ?). 



]\Iale. Upperside. Forewing similar to the ordinary Dry form, the black inner 

 border to the orange fascia somewhat broader. Hindwing with the marginal band 

 narrower and macular. Underside paler yellow than in the ordinary Dry form. Both 

 wings slightly flecked with strigse. Forewing with the discocellular spot larger and the 

 discal spots on both wings much less apparent. 



Female. Upperside white. Foretcing with the subapical fascia pale yellow, its 

 lilac'k inner border medially very narrow. Hindwing with a slightly-defined narrow 

 dusky upper marginal decreasing somewhat-macular band. Underside very pale 

 yellow. Forewing with the discocellular spot and transverse discal spots more distinct 



