Pierine Butterflies of the Genus Delias. 149 
excepting in the ground-colour of the secondaries below, 
which, in the females, varies from buffish yellow to whitish. 
Five examples in the Hewitson collection. 
17. Deltas oraia. 
Delias oraia, Doherty, Journ. As. Soc. Beng. 1x. p. 189 (1891); Grose 
Smith & Kirby, Rhop. Exot. ii. p. 10, Del. pl. ii. figs. 5, 6 (1893). 
Sumbawa Island (ex coll. G.& 8.). ¢ 2, B.M. 
A well-marked local representative of D. Descombesi, the 
female being very distinct in character. 
18. Delias splendida. 
Delias splendida, Rothschild, Novit. Zool. i. p. 661 (1894); Smith & 
Kirby, Rhop. Exot. ii., Ded. pl. vi. figs. 4-6 (1895). 
Timor. 
A very fine and distinct species of the D. Descombest 
group. 
19. Delias belisama. 
Papilio belisama, Cramer, Pap. Exot. iii. pl. cclviii. A, B (1782). 
Var. Delias nakula, Grose Smith & Kirby, Rhop. Exot. Pier. i., Ded. 
pl. i. figs. 1-4 (1889). 
Var. Delias aurantia, Doherty, Journ. As. Soc. Beng. lx. p. 189 (1891). 
Delias belisar, Staudinger, Iris, iv. p. 78 (1891) ; Grose Smith & Kirby, 
Rhop. Exot. ii. p. 6, Ded. pl. ii. figs. 6, 7 (1893). 
Var. Delias vestalina, Staudinger (=nakula), Iris, iv. p. 79 (1891). 
Var. Delias erubescens, Staudinger, t. c. p. 80. 
Java. Twenty-six specimens. B. M. 
Six examples are in the Hewitson collection. Hight of 
the specimens in the general series are from the Godman and 
Salvin collection. 
Attempts have been made to show that the variations of 
this species are localized, but it is certain that Dr. Horsfield 
bred the typical form, D. nakula and D. aurantia, and there is 
no reason for supposing that he collected his larvee in different 
parts of the island. JD. belisar has been regarded as a variety 
identical with D. aurantia; it, however, differs in the greater 
width of the outer border of the secondaries in the male; the 
female does not differ: it is said to occur at Malang, and 
may possibly be a localized sport of the species. D. eru~ 
bescens is probably a rare aberration; we have a small female 
of a very deep rosy orange colonr (formerly in the Kaden 
collection). Intergrades occur between typical D. belisama 
and D. aurantia. 
Ann. & Mag. N. Hist. Ser. 6. Vol, xx. it 
