Edstern Plerldcs. 397 



white, the disc of the hind wings only tinged with sulphur-yellow, 

 and the margin more broadly black. 



J^ai. — Borneo (Coll. Wall.), (? B. M.). 



This interesting species bears the same relation to glauc'ippe 

 that leucogi/nia does to leudppe ; the female being coloured white 

 and black only. 



3. Ijjhias Fussi'i, Maitland. 



IpJiias Vossii, Mait. Tijd. voor Ent. ii. p. 25 ; Voll. Mon. Pier. 



p. 55, pi. vi. f. t. 



^a6. — Island of Nias, near Sumatra (Leyden Mus.). 



4. Iphias sulpfiurea, Wallace. 



Iphias sulphured, Wall. Journ. of Ent. vol. 2, p. 5. 

 /. Felderi, Voll. Mon. Pier. p. 53, pi, 6, f. 2, 3, ^, $. 

 iZ^ai.— Batchian, Gilolo, Morty Island (Coll. Wall.). 



5. Iphias leucogynia, Wallace. 



Iphias leucogynia, Wall. Journ. of Ent. vol. 2, p. 4, pi. 1, f. 



1 (?, f. 2 $. 

 Jifl6.— Bouru (Coll. Wall.). 



6. Iphias Icuc'ippe, Cramer. 



Papilio leucippe, Cr. SQ A, B, C. Iphias leucippe, B 1. S]). 



Gen. p. 59G. 



Hab. — Amboina, Ceram (Coll. Wall.). 



This magnificent insect is not uncommon in Amboina as well as 

 in Ceram, although the Leyden Museum possesses no specimens 

 from the former locality. 



Dercas, Boisduval. 



A small group of insects separated from Gonepteryx by Dr. 

 Boisduval, and now generally adopted. Their wings are larger 

 in proportion to their bodies, their antennae more slender, the 

 wing cells much shorter, and the radial of the lower wing is very 

 differently situated, Dercas gobrias flies slowly in forest clearings 

 near the ground, often settling in damp places. The genus seems 

 confined to India, Borneo, and Sumatra. 



VOL. IV. THIRD SERIES, PART III, —NOVEMBER, 1867. E E 



