1687.] OF JAHAN AND COREA. 405 



4. PaPILIO DEMETRIUS. 



P. demetrius, Cr. Pap. Ex. iv. t. 385. f. E, F (1782). 



P. carpenteri. Bull. Ann. & Mag. Nat. Hist. ser. 5, x. p. 318. 



Common in Southern and Central Japan. 



The female varies in the red markings, and blue suffusion of hind 

 wing. 



The summer brood is larger than the spring form, which Mr. 

 Butler has named carpenteri. 



5. Papilio macilentus. 



P. macilentus, .Tanson, Cist. Ent. vol. ii. p. 158. 



P. tractipennis, Butl. Ann. & Mag. Nat. Hist. ser. 5, vii. p. 139. 



P. sccevola, Oberthiir, Et. Ent. iv. p. 3/. 



This species inhabits the mountains of Central and Southern Japan, 

 and is rather rare, especially the female. It is easily distinguished 

 from P. demetrius by its extremely long narrow wings and tails. 



6. Paptlio alcinous. 



P. alcinous, King, Neue Schmett. t. i. 1836. 



P. spathatus, Batl. Ann. & Mag. Nat. Hist. ser. 5, vii. p. 139. 



Common all over Central and Southern Japan. 



The summer brood is larger than the spring, and has longer 

 tails. I have some specimens from Southern Japan which are 

 hardly separable from P. mencius, Feld., from N. China. 



7. Papilio helenus, Linn. 



P. nicconicolens, Butl. Ann. & Mag. Nat. Hist. ser. 5, vii. p. 139. 



This fine species is not rare in April at Nngasaki, and in the 

 Provinces of Higo and Satsuma ; it also occurs in Tosa. 



The yellow marking on the hind wing, on the strength of which 

 the Japanese form has been described as distinct, is not constant. 

 It is in no way separable from Chinese specimens in my possession 

 from Hong-Kong, Foochau, and Ningpo. 



8. Papilio memnon, Linn. 



P. thunbergii, Siebold, Hist. Nat. Jap. p. 16 (1824). 



Not rare in Southern Japan in April and May. 



Of a number of females taken in Kiushiu, no two specimens are 

 alike, some of the males vary also in having the red mark at the 

 base of the fore wing, which is only present in the female sex. 

 Specimens I took also at Ningpo, Foochau, Hong-Kong, Saigon, 

 and Singapore present an equal amount of variation. 



9. Papilio sarfedon, Linn. 



Very common in Southern and Central Japan. The summer 

 brood are always larger and darker than the spring form, and have 

 hence been confused with teredon, Feld.', which does not occur 

 in Japan but in Ceylon. 



1 P. teredon, Feld. Eeise Nov. Lep. i. p. 61 (1865). 



