370 Mr. A. R. Wallace on 



JPieris albitia, Bd. Sp. Gen. p. 480, $. 

 Piens galene, Feld. Voy. Novara, p. 165, $ var. 

 JPieris darada, Feld. ih, p. 1G6, $ var. 



Mah, — (Males.) N. India, S. India, Penang, Java (Horsf., 

 B. M.), Celebes, Bouru, Ceram, Gilolo, Batchian 

 (Coll. Wall.), Obi?, Morty?, Philippines (Wall.). 

 (Females, rvhile.) N. India, Bengal, Ceylon, Philip- 

 pines (W. W.Saund.), Bouru (Wall.), Obi, Morty 

 (Voll.), Timor, Lombock, Amboina (Wall.). 

 (Females, yellow.) Batchian, Aru Islands, Makian, 

 (Wall.), Java (Horsf.). 

 The males vary from pure white with only a dusky costa, to 

 such as have a dusky outer border extending up the nervures of 

 the upper wings, and formed of small spots at the end of the 

 nervures of the hind wings ; and the females sliow every grada- 

 tion from the delicately coloured form of tlie Moluccas (^tieoinbo, 

 Bd.) to the darkest specimens of paidina, Cr. All the males, 

 however, have the under surface of two tints — white and pale 

 ochre, and the females all have a glossy tint of pearly white on the 

 underside of the hind wings. The yellow form is described by 

 Boisduval as a variety of neomho. The specimen from Gilolo, 

 described by Vollenhoven (Mon. Pier. p. QG), seems intermediate, 

 having the upper side yellow, while the under side is pearly 

 white, the disc of the uppers only being yellow. I am informed 

 by Mr. Semper that he possesses also from the Philippines spe- 

 cimens of these two forms with some which connect them. 



18. Tachijris Rouxii, Boisduval. 

 Pieris Rouxii, Bd. Sp. Gen. p. 481, $ . 

 Hah. — Punjaub, N. India (B. M., Coll. Hewitson, $ ). 

 This differs from T. 'pauUna, $ {albina, Bd.), only in having 

 the under surface uniform white. 



19. Tachjris 'psyche, Felder. 



Pieris psyche, Feld. Voy. Novara, p. 166. 



-ff«6.— New Caledonia (Feld.), New Hebrides (Coll. W. W. 

 Saunders). 



This form differs from the rest by the lower wings and the apex 

 of the uppers being " saffron yellow" beneath. 



