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Show 108 MR. H. DRUCE ON LEPIDOPTERA FROM SIAM. [Jan. 20, Genus DELIAS, Hiibn. 1. D. HIERTE, Hiibn., var. INDICA, Wall. Trans. Ent. Soc. ser. iii. vol. iv. p. 351 (1867). Nahconchaisee. Genus ERONIA, Hiibn. 1. E. VALERIA, Cram. (Pap. V.) Pap. Ex. i. t. 85 A (1779). Chentaboon. Genus CALLIDRYAS, Boisd. 1. C. PYRANTHE, Godt. Enc. Meth. ix. p. 77 (1819). Chentaboon; Nahconchaisee. 2. C. CROCALE, Cram. (Pap. C.) Pap. Ex. i. t. 55 C, D (1779). Chentaboon; Nahconchaisee. Genus HEBOMOIA, Hubn. 1. H. GLAUCIPPE, Linn. (Pap. G.) Mus. Ulr. p. 240 (1764). Chentaboon; Nahconchaisee. Genus IXIAS, Hiibn. 1. I. VERNA, n. s. (Plate XVI. figs. 5, 6.) Upperside (male) yellowish white, with the base of the anterior wing greyish ; apical half broadly black, bordered on the inner margin with bright yellow, with a large subapical orange band. Posterior wing, over the outer magin broadly black, extending from the apex to near the anal angle ; abdominal margin sulphur yellow. Underside the same as I. pyrene, Linn. The female chiefly differs from the male in having all the dark margins much broader, and the subapical orange band smaller and paler-coloured. Underside the same as the male. Exp. 6 2| in., $ 2 in. Nahconchaisee. In coll. H. Druce. Genus ORNITHOPTERA, Boisd. 1. O. R H A D A M A N T H U S , Boisd. Sp. Gen. i. p. 180. n. 8 (1836). Chentaboon, 1 J ; Nahconchaisee, 1 J . Genus PAPILIO, Linn. 1. P. A G A M E M N O N , Linn. Mus. Ulr. p. 202 (1/64). Chentaboon. 2. P. ERITHONIUS, Cram. Pap. Ex. iii. t. 232 A, B (1782). Nahconchaisee. 3. P. DEMOLION, Cram. Pap. Ex. i. t. 89 A, B (1779). Chentaboon. 4. P. POLYTES, Linn. Mus. Ulr. p. 186 (1764). Chentaboon, 4 c?, 3 5 ; Nahconchaisee, 2 tf, 3 $ . |