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Show 290 LIEUT.-COL. C. SWINHOE ON THE LEPIDOPTERA [Mar. 17, 23. POLYPTYCHUS DENTATUS. Sphinx dentata, Cram. Pap. Exot. ii. 42, pi. 125. f. G. Poona, December ; Belgaum ; Bombay, October and November. Larvae feed on Cordia angustifolia ; when full-grown measured 4\ inches, colour green, with ochreous stripes ; one moth emerged in 26 days, in July, and two of another brood in December took 63 days in the pupal stage. 24. ACHERONTIA MORTA. Acherontia morta, Hiibn. Verz. Schmett. p. 140, 1496. Poona, June and August ; Bombay, August and September. 25. ACHERONTIA STYX. Acherontia styx, Westwood, Cab. Orient. Ent. 88, pi. 42. f. 3. Poona, September ; Bombay, September and October. The larvae of both the above feed on potato, jasmine, Erythrina indica, Datura, and Colea ; the larvae, when disturbed, make the same peculiar clicking noise the moth does ; they average in length from 4 to 5g inches ; larval stage 28 days, pupal stage varies from I to 4 months. They vary much in colour : those fed on potato were bright canary-yellow, with seven violet stripes, those fed on the other plants named were of the usual green colour with purple stripes bordered with yellow; but there was no visible difference in the moths as to sex, colour, or size, whether they came from the yellow caterpillars or from the green ones. ZYCENIDiE. 26. EuCHROMIA POLYMENA. Sphinx polymena, Linn. Syst. Nat. ii. p. 806, 40. Bombay, September. 27. SYNTOMIS EXTENSA. Syntomis extensa, Walker, xxxv. 1863. Matheran, May. 28. SYNTOMIS CUPREIPENNIS. Syntomis cupreipennis, Butler, Journ. Linn. Sec. xii. p. 347. Poona, July and October. 29. SYNTOMIS PASSALIS. Zygrena passalis, Fabr. Sp. Ins. ii. 159, IL Poona, May, October, and November. 30. SYNTOMIS MONTANA. Syntomis montana, Butler, Journ. Linn. Soc. xii. p. 349. Poona, September and October. 31. ERESSA MUSA, n. sp. (Plate XX. fig. 1.) Bombay, February. Allied to Eressa confinis, Walker. Smoky brown, a gold spot |