NEW NORTH-EASTERN SUMATRA BUTTERFLIES. ol 
“ male-mark ” defined by a thin orange line ; the base of the wing powdered 
with dusky; éail black, UnpERsIDE, both wings brownish-orange, with the 
usual annular fine macular markings. Hindiwing powdered with violet and 
lack in the anal area. 
Nearest to Y. pita, Horsfield, which I have from Sumatra and Java, differ- 
ing therefrom in the broader outer black margin to the forewing, and especially 
in. having more than half the area of the hindwing black, in the male of Y. pita 
the outer margin alone is narrowly black, with a broad black streak along 
the “ male-mark.” 
Described from a single male in my collection. 
Family PAPILIONID A. 
Subfamily Prermvz. 
11. DELIAS DANALA, n. sp., Pl. L, Fig. 9, 4. 
Hapitat: Battak Mountains, Sumatra. 
EXPANSE: &, 2°2 inches, 
DesorieTion : Mate, UPpERsipE, both wings dead chalky white. ore- 
wing with the costa as far as the subcostal nervure dusky ; the apex very 
broadly (extending, in fact, almost to the outer end of the discoidal cell), but 
rapidly decreasing to the anal angle, where it ends in a point, dusky, bearing 
three indistinct whitish spots between the veins anterior to the third median 
nervule. Hindwing with the outer margin posteriorly narrowly black, the 
black colour extending inwardly slightly between the veins in a dusky powder- 
ing. UNDERSIDE, forewing as above, but the veins outwardly, rather broadly, 
defined with black ; there are also five subapical spots between the veins, of 
which the uppermost on the costa is very small, the next the largest and pale 
yellow, the three following decreasingly smaller and dusky white. Aindwing 
clear yellow, all the veins narrowly black, the outer margin with a rather broad 
blackish border, bearmg five lunular spots between the veins, of which the three 
posterior ones are whitish, the two anterior yellow. 
Nearest to D. singhapura, Wallace*, known to me by the figure and descrip- 
tion only, from Singapore and Borneo, differs in its smaller size, that species being 
3°12 inches in alar expanse, the forewing rounded, not conspicuously elongated, 
and with the apex rounded, not highly pointed ; on the underside of the fore- 
wing the veins—-especially the median nervure—are less broadly defined with 
black, the marginal spots are smaller and only five, instead of six, in number ; 
on the hindwing the outer black border is narrower, less deeply black, the spots 
smaller, less distinct, entire, not divided by the internervular folds, five instead 
of six in number, the uppermost one of D. singhapura in the upper subcostal 
interspace being wholly wanting. Other allied species are D. agoranis, Grose 
* Trans, Ent. Soc. Lond., third series, vol. iv, p. 353, n. 29, pl. vii, fig. 2, male (1867). 
