872 MR. H. J. ELWES ON THE BUTTERFLIES [Nov. 15, 



Papilio protenor, Cr. Pap. Ex. i. t. 49. f. A, B (1779), 



which I have seen from Formosa, Hongkong, and is recorded by 

 Felder from Ningpo. It is quoted, probably by mistake, by Mot- 

 schulsky from Japan, where it is represented by 



P. DEMETRIUS, Cr. Pap. Ex. iv. t. 385 (1782). 



Common in Central Japan {Pryer, Jonas), N. China (Sommer), 

 and occurring in the Fungwhan hills near Ningpo, whence speci- 

 mens collected by Pryer are in Godman's and my own collection, 

 which agree very well with Japanese specimens. The larva, ac- 

 cording to De I'Orza, feeds on orange-trees. 



P. MACiLENTUs, Jauson, Cist. Ent. ii, p. 158, t. v. fig. 1 (1877). 



The male of this resembles generally that of the next species in 

 colour, but is easily distinguished by the long narrow wings and long 

 tails. The female is larger, and seems rare. It occurs at Oyama 

 (Jonas), and elsewhere in Japan. 



Forms of this or of the last species, prohably not worthy of sepa- 

 ration, are P. tractipennis, Butler, Ann. & Mag. Nat. Hist. ser. 5, 

 vii. p. 139, from Nikko (Maries), and P. sccevola, Oberthiir, Et. 

 Ent. iv. p. 37 (1879), from China, which is identified with P. inaci- 

 lentus by Mr. Butler. 



P. ALCiNous, Klug, Neue Schmett. t. i. (1836). 



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



Japan (Pryer, Jonas) ; Yesso (Maries). 



This species has the male black, with brown spots on the hind 

 wings and tails beneath ; whilst the female is of a pale fawn, or light 

 brown colour. It is common in Japan ; but I cannot see any good 

 reason for distinguishing from it the species lately described by 

 Mr. Butler, and I believe that a good series of specimens in this, as 

 in other cases, would break down the characters on wliich he relies. 

 The larva of P. alcinous, according to De I'Orza, feeds on Aristo- 

 lochia. 



Another form which Felder, as I think, rightly says is probably 

 a local variety of P. alcinous, is 



P. MENCius, Feld. Wien. ent. Mon. vi. p. 22 (1862). 



? P.plutonius, Oberthiir, Et. Ent. ii. p. 16, t. iii. fig. 2 (1876). 



Described by Felder from Ningpo. I have specimens from 

 Shanghai (Pryer), and have seen it from Kiukiang (Maries). 



\i P.j)lutoniiis, Ober., is the same, as I suspect, its range extends 

 to North China, probably near Pekin (David). 



It differs from P. alcinous principally in having the spots pink 

 instead of fawn, and in other characters which seem variable. The 

 sexes, however, are much less distinct in colour than in P. alcinous, 

 the males being paler and the females darker. 



P. ARiSTOLOCHi^, Fabr. Syst. Ent. p. 443 (1775). 



Specimens from the Ningpo hills (Pryer) are smaller than usual. 



