PAPILIO. 



hill at GOOO feet at Rikisum in August. Moller has seen it on Birch Hill at 

 7000 feet in July, and Mr. Knyvett has taken the very rare female on Sinchul 

 in August. It seems, therefore, to be a single-brooded species, inhabiting 

 the same zone of elevation as most of the peculiar Sikkim species do. The 

 female, which has never been described, differs very markedly from the male 

 in its pale whitish colour above." 



Distribution. Sikkim and Western China. 



Papilio philoxenus. 



Papilio philoxenus, Gray, Zool. Misc. p. 32 (1831) ; Lep. Nepal, pi. ii. (1846); West- 

 wood, Cab. Orient. Ent. p. 81, pi. xl. fig. 2 (1848). 

 Papilio poly euctes, Doubleday, Zool. Misc. p. 74 (1842) ; Westwood, 1. c. pi. xl. fig. 3. 

 Papilio lama, Oberthiir, Etud. d'Entora. ii. p. 15, pi. iii. fig. 1, ? (187G). 

 Byasa philoxenus, Moore, Proc. Zool. Soc. Lend. 1882, p. 258. 



" Papilio alis anticis maris nigris, foemina3 f uscis nigro longitudinaliter striatis, posticis clongatis 

 candatis, valde siniiatis, macula magna oblonga alba versus angulum externum, puncto vol 

 macula minori utrinque interdum adjecta, lunulis tribus rufis vol albo-rufis maculaque rufa 

 ad apicem caudae strigaque in pagina infera, ex angulo anali rufis. 



" Papilio, with the fore wings of the male black, the female brown with black longitudinal streaks 

 between the veins, the hind wings more or less elongated, tailed, and deeply sinuated, with a 

 largo white spot near the outer angle, occasionally with a smaller spot on either side of it, 

 and with three red or red and white lunulcs, a red spot at the extremity of the tail, and with 

 a variable streak of red extending inwardly from the anal angle on the underside of hind 

 wings. 



" Expansion of the fore wings 4| to 5| inches. 

 " Inhabits Assam, Sylhet, Nepaul, &c. 



" Figure 2, which is drawn from the type specimen of P. p)}uhxentis, has the tail but moderately 

 broad, and the spots on the upperside of the hind wings are (except the large outer one) 

 strongly marked with red. This is a native of A^epaul. 



"Figure 3 represents another insect from Sylhet, which Mr. E. Doubleday (Zool. Misc. p. 74) 

 described under the name of P. pohjeuctes, but which he now considers as a variety only of 

 P. philoxenus. The posterior wings are very much elongated, and on the upperside the 

 large white spot of the hind wings is not accompanied by the two small spots visible on 

 either side of it on the under surface, nor is the red mark at the anal angle visible. 

 Mr. Doubleday having represented the upperside of this supposed species in his work on the 

 butterflies now in course of publication, the underside is here given, copied from a figure 

 communicated by Mr. Doubleday." ( Westwood, I. c.) 



Yar. polyeuctes, Doubleday. " Male. Above : anterior wings black, deepest at base, striated in 

 the discoidal cell and between the terminations of the nervures : posterior wings very much 

 elongate, deeply dentate, with a rather spatulate tail : between the two posterior branches of 

 the subcostal nervure, and close to the discoidal cell, is a large nearly quadrate white spot ; at 



4b 



