NEW NORTH-EASTERN SUMATRA BUTTERFLIES. 55 
bearing on each side a series of four round black spots; thorax beneath and 
anal valves black ; abdomen beneath bright chrome-yellow, the spiracles black. 
It is a very remarkable fact that in certain groups of Papilios the females are 
far more often met with than the males, This is especially noticeable in the 
small group which contains P. sycorax, P. priapus, Boisduval, and P. hageni, 
Rogenhofer, all of which are remarkable in having the face and anterior portion 
of the thorax above pale buff-yellow. Even the Battaks have noticed this 
curious feature, and call the butterfly “ white-head.” P. sycoraz, as Mr. 
Grose Smith points out, is obviously close to P. priapus, from Java, but 
having only three female specimens of the latter, | am unable to make a 
comparison between the respective males of the two species. The females differ 
chiefly in the outer area of the hindwing on both sides of P. sycorax being 
greenish, in P. priapus buff-yellow. 
Dr. Martin has only obtained three males of this fine species, two of which he 
has generously presented to me, together with four females, Mr. J. Wray, Jr., 
has also sent me a female from the Perak Hills. 
16. PAPILIO (Pangerana) HAGENI, Rogenhofer, Pl. M, Fig. 2, 9. 
Papilio hageni, Rogenhofer, Verh. zool.-bot. Gesellsch. Wien, vol. xxxix, p.1 
(1889). 
Haprrat : Sumatra (Rogenhofer and collections Martin and de Niceville). 
EXPANSE : Q, 6°0 inches. 
DESCRIPTION ; FEMALE. UPPERSIDE, forewing sordid-white, semi-trans- 
‘parent, the base, costa, apex and outer margin fuscous, all the veins broadly 
marked with fuscous, the discoidal cell bearmg four longitudinal black streaks, 
the interspaces beyond the cell also bearing a black streak each. Hindwing 
shining black, the basal half tinted with dark olive-green ; the disc bears a large 
white area crossed by the black veins and by four large oval black spots, the 
anterior of these almost merged into the black ground-colour, the white area 
anterior to these spots pure white, posterior to them sprinkled with black scales, 
UNDERSIDE, forewing a little paler than above, similarly marked. Hindwing 
with the ground-colour throughout deep black, the white area a little larger, 
almost pure white throughout, the anterior oval black spot better defined, 
anteriorly only coalescing with the ground-colour, Head in front and thorax 
anteriorly pale buff-yellow, thorax and abdomen above black, thorax beneath 
black, abdomen beneath rich crimson, cross-banded with black, and bearing on 
each side a series of small black spots. 
This very fine species is closely allied to P. priapus, Boisduval, and to 
P. sycorax, Grose Smith, and has the face and thorax above anteriorly of the 
same colour as in those species. Dr. Martin has given me the specimen figured ; 
he has a male (still nondescript) and other females in his collection, but the 
Species appears to be a very rare one, 
