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

by Alfred Russel Wallace

Hab. New Guinea (Paris Museum).

56. Papilio Helenus, Linnæus.

P. Helenus, L.; Cramer, Pap. Ex. t. 153. f. A, B; Lucas, Lep. Ex. t. 15. f. 2; Boisd. Sp. Gén. Lép. p. 211.

Hab. China (“type,” Cramer’s figure).

Local form a. Has more falcate wings and longer tail; the red marks at the anal angle beneath are divided by a violet-white mark.

Hab. North India.

Local form b. Same form of wings as the last, but smaller; the third and fourth lunules from the anal angle beneath very small or quite absent.

Hab. Java, Sumatra (Wall.).

57. Papilio Hecuba, n. s. Tab. V. fig. 3 (♂).

Upper wings falcate, and their outer margin much hollowed out, as in many of the Celebes butterflies.