On the phenomena of variation and geographical distribution as illustrated by the Papilionidæ of the Malayan region

by Alfred Russel Wallace

♂. P. Helena, Cram. Pap. Ex. t. 140. f. A, B. O. Helena, Boisd. Sp. Gén. Lép. p. 177.

♀. P. Amphimedon, Cram. Pap. Ex. t. 194. f. A. O. Amphimedon, Boisd. Sp. Gén. p. 176.

Hab. Amboyna and Ceram (Wall.).

The females from these localities are always sooty, with the spots and markings on the hinder wings of a dull buff-colour even in the freshest specimens.

a. Local form Bouruensis.—Male: exactly resembles the Amboyna specimens, except that the yellow patch is more variable in form and extent.

Female: nearly black, and with the markings on the lower wings almost as pure and deep yellow as in the males: size a little smaller than in the type.

Hab. Bouru (Wall.).

b. Local form Papuensis.—Female: sooty black, the two first branches of the subcostal nervure margined with whitish near their origin; markings of the lower wings of the same tint of orange-yellow as is O. Helena ♂, but not so glossy.

Male not known.

Hab. New Guinea, Salwatty (Wall.).