548 PAPILIOXID.E. 
species is rare about Yokohama, but is more abundant in the mountains ; it 
occurs from May throughout the summer. He says : — " The female is very 
seldom to be obtained. The male, which is ornamented exactly as in the 
preceding species [P. demefrms]^ is in its first brood often very diminutive, 
and I have captured them less than half the size of the female specimen 
figured. I have not yet found the larva. This species is specially adapted to 
fertilizing lilies, the pollen from the flowers, which it frequently visits, 
adhering to its long hind wings and tails." 
The male specimens in my collection range from SG-120 millim. iu expanse, 
and the largest female measures 134 millim. 
This insect does not appear to be common in China. I have received 
specimens from Kiukiang, Ta-chien-lu, Wa-ssu-koAv, and Pu-tsu-fong. Ober- 
thiir's type of sccevola Avas from Boisduval's collection, and probably from 
China. 
Dr. Staudinger curiously confounds this species with P. machaoii. 
Distribution. Central China; Southern and CentralJapan. 
Papilio helenus. 
PapUio helenus, Linnreus, Syst. Nat. i. 2, p. 745 (17G7) ; Distant, Rhop. Malay, p. 343, 
pi. xxix. fig. 3, S (1885) ; Pryer, Rhop. Nihon. p. 4, pi. ii. fig. 2 (1886). 
Papilio nicconicolens, Butler, Ann. & Mag. Nat. Hist. (5) vii. p. 139 (1881). 
Charus helenus, Moore, Lep. Ceyl. i. p. 149, pi. Iviii. fig. 3, S (1881). 
" P. E. alis caudatis nigris ; posticis macula alba ; subtus tribus albidis lunulisque scptem ferru- 
gineis." {Linnoms, I. c.) 
" Brownish black. Fore wing sparsely irrorated ■with gohlen-jollow scales disposed in streaks 
between the veins. Hind wing with a broad pale yellow npper discal band, which has au 
irregular outer border; an indistinct crimson slender lunule above anal angle, and otlier 
lunules from the lower exterior margin, these being most distinct in the female ; a few yellow 
scales on the disc below the band. 
" Expanse 4| to 5i inches. 
" Larva green, similar in form to P. parinda, with pale ])inliish flesh-colour lateral lower band 
along all the segments, the oblique band on the eighth, ninth, and tenth segments more 
irregular and extending across the back. Pupa olive-brown, much curved backward 
anteriorly, similar to that of P. parinda." (Moore. 1. c.) 
Papilio nicconicolens, Butler. — " Very near to P. helenus, but constantly differing in the creamy- 
yellow patch of secondaries being carried below the radial vein in the form of a large squamose 
spot, and in the submarginal lunules on the under surface of the same wings being far more 
arcuate. Expanse of wings 5 inches 3 lines." (Butler, I. c.) 
The differences on which nicconicolens has been separated as a species 
