(271 ) 



anal augle than in mencius and slightly paler, broad during its whole length; 

 hindwiugs deeply scalloped ; tails short and broad at the tip ; underside of hindwings 

 pale; sexual organs as in figs. 27-30, 41. — Western China. 



(7) fatuus m. : head as before ; colour of hindwings as before : hindwings less 

 scalloped; scent-organ white, shorter and narrower; sexual organs as in figs. 31, 42. 

 — Ta-tsien-lu. 



If we compare the series of figures taken from ulcinotts and confusus (figs. 1-20, 

 32-39), there can be no doubt that the Japanese alcinous, the Loo Choo confusus, 

 and the Chinese confusus belong to one species ; but what do the figures tell us 

 in respect (x) the insects enumerated above under 4 to 7 ? As the genitalia of 

 alcinous and confusus vary to such an extent as is shown in figs. 1-20, I cannot 

 see that the sexual organs represented in figs. 21-30 and 39-41 are anything else 

 but also variations of the organs of the same species ; they certainly do not prove 

 that the varieties enumerated above under 4 to 6 are distinct species. We must 

 bear in mind that out of about thirty specimens of alcinaiis only one individual has 

 the harpe shaped as in fig. 11 ; that out of about thirty confusus also only one 

 specimen comes in the structure of the sexual organs close to jjlutonius and alcinous 

 (fig. 13) ; and that of numbers 4 to 6 only a relatively small number of individuals 

 could be examined, which did not provide us (accidentally ?) with intergi-adations. 

 Whether fatuus, of which I have only one specimen, is an aberration or a distinct 

 species must be left undecided. We come, therefore, to the same conclusion to 

 which we were led without comparison of the genitalia, namely, that all the insects in 

 question are most probably forms of one species only. 



The Loo Choo insect, combining the characters of alcinous and inencixis, 

 remains best without a name of its own ; confusus and inipediens have to stand 

 as aberrations o{ mencius, und fatuus may be treated for the present as an aberration 

 of piutonius. 



As regards the female sex of the Chinese insect in question, it is difficult to say 

 which specimens must be mated with mencius, which with confusus or impediens. 



I thought first that mencius, confusus, and impediens might be seasonal forms 

 of one species ; but this is not possible, at least as regards Tnencius and confusus, 

 as I have both from Kiu-Kiang and Fu-tschou, taken in April and July at 

 either place. 



Hab. China (64 c?, 39 ?); Loo Choo Islands (2 J). 



(c): P. alcinous plutonius oherth. [c?,?]. 



(J. PapiUii alcinous var., Horsf. & Moore, Cat. Lep. Ins. Mas. E. I. C. I. p. 95. sub n. 193 (1857) 



(Bhutan). 

 (J ? . Pajiilio jilutoniiis Uberthtir, l-Jt. d' Ent. II. p. IG. n. 3. t. 3. f. 2 (J) (1876) (Monpin) ; id., 



l.c. IV. p. 42, n. 49 (1879) (Moupin) ; Elwes, Tr. Ent. Sue. Loncl. p. 424. n. 398 (1888) 



(Bhutan?) ; Leech, Butkrji. of China, etc. p. 541 (1893) (W. China). 

 (J $ . PajiUio a!mtou.f, Leech, Tr. Ent. Soc. Land. p. 115. n. (38 (1889). 



?. Pajiiliu (.« Bijasa) philonina, Nic<;ville, Gazttlen- of Sikkim p. 171. n. 463 (1894) (Bhutan?). 

 Papilio (.' Byasu) alcinous, id., l.c. p. 171. u. 464 (1894) (Bhutan). 



The wings are above of a .stronger greenish glos.sy tint than in me^icius Feld., 

 and the hinder wings are paler below than in both menckis and alcinous, especially 

 in the female. The forewings are rather broader, the hindwings more deeply indented, 

 with the tails shorter, broader, and more spatulate. The scent-organ of the viale 

 within the abdominal fold of the posterior wings is paler and narrower than in tyisical 



