Pierine Butterflies of the Genus Delias. 149 



excepting in the ground-colour of the secondaries below, 

 which, in the females, varies from huffish yellow to whitish. 

 Five examples in the Hewitson collection. 



17. Delias oraia. 



Delias oraia, Doherty, Journ. As. Soc. Beng. Ix. p. 189 (1891) ; Grose 

 Smith & Kirby, Rhop. Exot. ii. p. 10, Del. pi. iii. figs. 5, 6 (1893). 



Sumbawa Island (ex coll. G. & S.). 6 $ , 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., Del pi. vi. figs. 4-6 (1895). 



Timor. 



A very fine and distinct species of the D. Descombesi 

 group. 



19. Delias belisama. 



Papilio belisama, Cramer, Pap. Exot. iii. pi. cclviii. A, B (1782). 



Var. Delias ndkula, Grose Smith & Kirby, Rhop. Exot. Pier, i., Dei. 



pi. i. figp. 1-4 (1889). 



Var. Delias aurantia, Doherty, Journ. As. Soc. Beng. Ix. p. 189 (1891). 

 Delias belisar, Staudinger, Iris, iv. p. 78 (1891) ; Grose Smith & Kirby, 



Rhop. Exot. ii. p. 6, Del. pi. 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. Eight 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 larvae in different 

 parts of the island. D. 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 colour (formerly in the Kaden 

 collection). Intel-grades occur between typical D. belisama 

 and D. aurantia. 



Ann. & Mag. N. Hist. Ser. 6. Vol. xx. 11 



