l. _Erithonius_ group. 81. PAPILIO ERITHONIUS, Cramer. _P. Erithonius_, Cr. Pap. Ex. t. 232. f. A, B. _P. Epius_, Fabr.; Don. Ins. China, pl. 29. f. 2; Boisd. Sp. Gén. Lép. p. 238. _Hab._ India, China (_type_). Local form _a_ (_Malayanus_).—The two spots on the lower margin of the cell of the hind wings wanting; anal spots redder, and the ocellus at the outer angle darker: two spots in cell of fore wings, as in the type; but in Flores specimens these approach so as almost to unite. _Hab._ Singapore, Flores (_Wall._), Manilla. Local form _b_ (_Sthenelus_, Macleay).—A single large spot in the cell of the fore wings; one small detached spot on the margin of the cell of the hind wings. _Hab._ Goram Island (_Wall._), Australia. SECTION C. m. _Paradoxa_ group. 82. PAPILIO PARADOXA, Zinken. _Zelima Paradoxa_, Zink. Beitr. Ins. Java, t. 15. f. 9, 10. _P. Paradoxa_, Westw. Cab. Or. Ent. pl. 9. f. 1, 1*. _Hab._ Java (_Wall._). Local form _a_.—_P. Paradoxa_, var., Hew. Proc. Zool. Soc. 1859, p. 422, pl. 67. f. 1 (♂), 2 (♀). _Hab._ Borneo (_Wall._). Local form _b_.—Smaller; intermediate in the markings between the Java and Borneo forms; interior row of elongate marks on upper wings light blue, not descending to the outer angle. _Hab._ Sumatra (_Wall._). Both sexes of this species closely resemble the corresponding sexes of _Euplœa Midamus_, Cr., which is very common in all the above-mentioned localities. 83. PAPILIO ÆNIGMA, n. s. Tab. VII. fig. 3 (♂). Size, form, and markings nearly the same as in _P. Paradoxa_. Above:—purplish black, without any gloss or silky reflexions; a submarginal row of white spots on all the wings, more or less blue-edged on the upper wings, sometimes partially obsolete on the lower ones; one or two spots at the end of the cell, and a row of six or seven elongate marks beyond it, bright blue. Beneath, the submarginal row of white spots only. _Female._—_P. Paradoxa_, var. A, Hewitson, Proc. Zool. Soc. 1859, p. 423, pl. 67. f. 3. I put this as the female of the above with some hesitation, as it was not captured in the same island. It agrees, however, in the entire absence of gloss, and in the peculiar elongation of the outer angle of the lower wings. _Hab._ Malacca, Sumatra (♂); Borneo (♀) (_Wall._). _Female variety?_—_P. Paradoxa_, var. B, Hewitson (Proc. Zool. Soc. pl. 66. f. 4), may be an extreme variation of this, but will more probably, when the male is discovered, prove to be a distinct species. 84. PAPILIO CAUNUS, Westwood. _P. Caunus_, Westw. Cab. Or. Ent. pl. 9. f. 2, 2*. _Hab._ Sumatra, Borneo (♂, ♀) (_Wall._), Java (_Leyden Mus._).