PTERINS. 203 



as being " common in the Khasia Hills " (Tr. Bnt. Soc. 1893, 309). Mr. L. 

 de Niceville records it (as A. Libythea) from Sikkim, as " occurring rather rarely at 

 2,000 feet elevation, in May" (Sikk. Gaz. 1894, 169). In Bnrma, according to the 

 observations made by Col. C. H. E. Adamson, " the form Zehnira appears in the 

 rainy-season and changes imperceptibly, as the cold and dry seasons follow each other, 

 into the form known as Irvinii. In my series of many males and females, although 

 I have extreme forms of each variety, yet it is quite impossible to divide the two when 

 a large number are seen together. I have also taken undoubted males of Zelmira in 

 coitu with both varieties of females. The insect is common in Upper Burma from 

 October to April" (List Burm. Butt. 1897, 44). Capt. B. Y. Watson obtained it 

 during the Chin-Lushai Exped. of 1889-90 at "Pauk, in September and October, at 

 Pokoko, in September, and at Tilin, in December. Very common" (J. Bombay 

 N. H. Soc. 1891, 53). Capt. E. Y. Watson took the " wet form (his fig. 1) at Pokoko, 

 Upper Burma, in October, the intermediate form (his figs. 2 and 3) in the Upper 

 Chindwiu District, Upper Burma, in May, and the dry form (his tig. 4) in the Yaw- 

 District, Upper Burma, in January, and (fig. 5) in Toungoo, Lower Burma, in 

 January" (J. Bombay N. H. Soc. 1894, 498). Mr. 0. Limborg captured it on the 

 road from Moulmein to Meetan, Upper Tenasserim " (P. Z. S. 1878, 839). Mr. L. 

 de Niceville records it from Ponsekai, and the Hills on the Siamese frontier " (J. As. 

 Soc. Beng. 1886, 432). Dr. J. Anderson obtained it on " Blphinstone Island, Mergui, 

 in March " (J. Linn. Soc. Zool. 1886, 49). 



We possess a specimen of both sexes from Bauleah near Calcutta, from Mr. A. 

 Grote's collection ; males from Assam, Sikkim, both sexes from Burma and 

 Tenasserim. 



APPIAS LIBYTHEA. 



Papilio Libythea, Fabricius, Syst. Ent. p. 471 (1775) ; Spec. Ins. p. 41 (1781) ; Mant.Ins. p. 19 (1787). 

 Ent. Syst. iii. 1, p. 190; ? (1793). Jones, Icones, pi. 54, fig. 2 $. Donovan, Ins. India, pi. 27, 

 fig. 3, ? (1800). 



Pieris Libythea, Doubleday and Hewitson, Gen. D. Lap. p. 46 (1847). Moore, Proc. Zool. Soc. 18G5, 

 p. 759. 



Tuchyris Libythea, Butler, Catal. Fabr. Lep. B. M. p. 210 (1869). Kirby, Syn. Catal. D. Lep. p. 465 

 (1871). 



Appias Libythea, Moore, Lep. of Cejlor, i. p. 134, pi. 52, fig. 3, 3a cJ ? (1881). Swinhoe, Proc. Zool. 

 Soc. 1885, p. 138, id. 1886, p. 431. Hampson, J. As. Soc. Beng. 1888, p. 362. Davidson and 

 Aitken, Jou'n. Bombay N. H. Soc. 1890, p. 258; id. 1896, p. 573. Taylor, Butt, of Orissa, 

 1888, p. 16. de Niceville, Journ. Bombay N. H. Soc. 1898, p. 591 ; id. J. As. Son. Beng. 1900, 

 p. 254; id. I.e. 1899, p. 218. Watson, J. As. Soc. Beng. 1890, p. 268; id. J. Bombay N. H. 

 Soc. 18l'4, pp. 497-8. 



Appias Libythea (pt.), Fruhstorfcr, Deuts. Fnt. Zeit. 1902, p. 293 ; id. Soc. Ent. 1903, p. 26 



Papilio Zelitna, Cramer, Pap. Exot. iv. pi. 320, fig. E. F. ? {nee fig. C. D.). 



D d 2 



