PAPILIO. 



533 



blancbiitre sur le disque de ses ailos inferieures en dessous, alors que cette partie des ailes est 

 precisement la plus obscure dans les especes voisincs." (Oberthiir, I. c.) 



Female, Primaries ratber paler tban tbose of tbe male, and without tbe patcbes of long silky-black 

 bairs, but similar to that sex in all other characters. 



Expanse, c? 108-120 millira., ? 118-130 millira. 



This species is only separable from P. Manor by its narrower second- 

 aries, the entire absence of bluish colour on the costal area, and the presence 

 of a more or less well-defined pale patch on the disc of these wings. On 

 the under surface the outer area of primaries is not paler than the rest of 

 the wing. 



In his description of P. syfanius, M. Oberthiir refers to a whitish patch on 

 the under surface of secondaries, but this is not represented in his figure of 

 the species. This patch, which is placed at the end of the discoidal cell 

 . and is separated into three portions by the discoidal and upper discocellular 

 nervules, is present in all the specimens of the species that I have seen. 

 Sometimes it is white and conspicuous, but frequently it is suffused with 

 fuscous and more rarely with greenish. In some of the specimens with well- 

 defined white patches the interspaces above the patch are very pale, as in the 

 example figured (Plate XXXII. fig. 5). 



Occurs at Ta-chien-lu, Wa-shan, Pu-tsu-fong, Chia-kou-ho, and Ni-tou in 

 Western China during June and July, at elevations ranging from 5000 to 

 9000 feet. 



Papilio arcturus. 



Papilio arcturus, Westwood, Arc. Ent. i. p. 101, pi. xxvii. (1812). 



" P. alls nigris, viridi-atomosis ; posticis obtuse dentatis et late caudatis ; anticis striga interrupta 

 macularum ex atomis viridibus formata, ex angulo postico ad partem dimidiam alarum ducta 

 et cum margine subparallela ; posticis supra, plaga magnitudine mediocri, versus angulum 

 externum la?te oterulea strigaque ejusdem coloris ex ejus apicem ad marginem alarum 

 extensa, luuulis tribus sanguineis, maculaque ocellari (medio nigro) et linea transversa san- 

 guineis ad angulum analem, ilia cum striga curvata viridi-atomosa coronata ; alls subtus 

 nigricantibus basi albido-atomosis, anticis striga lata subapicali cinerea, venis lineis(jue 

 intermediis nigris ; posticis lunulis 5 rubro-fulvis (caeruleo-pulverosis) maculisque duabus 

 magriis rubro-fulvis (medio nigris et lunula supera cserulea ornatis) ad angulum analem. 



" Expans. alar, antic, unc. 5. 



" Inhabits the Himalayan Mountains, Sylbet, and the adjacent parts of India." {Westwood, I. c.) 



I have received this species from Ichang, Central China, and from Moupin, 

 Omei-shan, Wa-shan, and Chia-kou-ho in Western China. The specimens 

 vary considerably in size, and probably represent two broods. 



