226 On a new Papilio ^rom Bali. 



B. Upperside, both wings blue-black. 



a. Upperside, bind wing strongly marked witb longitudinal cream- 

 coloured stripes on either side of the longitudinal black veins. 



3. P. noctula, Westwood : Borneo. 



h. Upperside, hind wing uniform blue-black. 

 a'. Hind wing broad, deeply indented on the outer margin between 

 the veins, with broad creamy-white cilia. 



4. P. nyx, de Niceville : Bali. 



V . Hind wing narrow, shallowly indented on the outer margin 

 between the veins; the cilia just touched with white in the 

 middle of the internervular indentations. 

 6. P. erehtis, Wallace : Malay Peninsula, Sumatra, Borneo. 



Papilio {Pangerana) nyXj sp. n. 

 Hob. Bali. 



Expanse, $ , 5*0 inches. 



Female. — Upperside: both wings black, with a very slight 

 blue gloss. Fore wing with the apex white, this white area 

 bounded anteriorly by the second subcostal nervulc, ex- 

 tending slightly into the anterior outer end of the discoidal 

 cell, not reaching the apex and outer margin, and ending 

 posteriorly about the third median nervule ; this white area 

 bears narrow streaks of the ground-colour between the veins ; 

 cilia creamy white. Hind wing unmarked; cilia broadly 

 creamy white, this colour extending slightly on to the wing 

 in the internervular indentations. Underside : both wings 

 fuscous, without gloss. Fore wing with the white ai-ea more 

 extensive, bounded anteriorly by the first subcostal nervule, 

 and reaching nearer to the apex and outer margin ; an 

 obscure reddish streak on the middle of the costa anterior to 

 the costal nervure ; cilia creamy white. Hind wing un- 

 marked ; cilia creamy white, that colour extending much 

 more broadly on to the wing than on the upperside, especially 

 so on either side of the apices of the veins. Palpi, head 

 and thorax at the sides, and abdomen at the apex crimson. 



This species differs from the same sex of P. ereJ«s, Wallace, 

 in having the fore wing broader, the apical white area larger, 

 the cilia creamy white instead of black, and the ground- 

 colour less blue. The hind wing is markedly broader, the 

 incisures much deeper, and the cilia broadly creamy white ; 

 in P. erehus the cilia are only just touched with white between 

 the veins, otherwise black. 



This interesting species was captured by Mr. William 

 Doherty in March 1896, at 2000-4000 feet, in the island of 

 Bali, which is only separated from Java on the east by a 

 narrow strait. I am indebted to Mr. H. J. Elwes for the 

 gift of the specimen described. He has doubtless other 

 specimens in his collection. 



Indian Museum, Calcutta, 

 May 22nd, 1897. 



