1895.] L. de NiceVille & Dr. L. Martin — Butterflies of Sumatra. 443 



and quickly get rubbed and worn. All the butterflies of the subfamily 

 keep close to the ground, and rest with half -opened wings. 



Family LYC^ENID^E. 



282. Gerydds gigantes, de Niceville. 



O. gigantes, de Niceville, Journ. A. S. B., vol. lxiii, pt. 2, p. 23, n. 19, pi. v, 

 figs. 1, male; 13, female (1894). 



Dr. Martin obtained the type of this species in October, 1892, from 

 the mountains caught by the Battak collector Si-Ketjap, and later on 

 Dr. Martin took several specimens himself at Kamoe Oekor in August 

 and November, so this fine and large species probably occurs from the 

 latter place to the Central Plateau. On the wing it greatly resembles 

 some species of Pierinse, and will certainly when flying be always taken 

 by collectors for an insect of that subfamily. It is found also in Penang, 

 and is the largest and most distinct species in the genus. More than 

 half the surface on the upperside in both sexes is pure chalky- white. 



283. Gerydus symethus, Cramer. 



Grose Smith. Hagen. Occurs everywhere from near the sea to 

 the elevation of Namoe Oekor, even near houses, in orchards, and in 

 cocoa-nut plantations. It is common every year at Bindjei in November 

 and December. 



284. Gerydds gallus, de Nic6ville. 



G. gallus, do Niceville, Journ. A. S. B., vol. lxiii, pt. 2, p. 25, n. 21, pi. v, fig. 11, 

 female (1894). 



The figure of this species has not been well reproduced, the ochreous 

 and ferruginous mottlings of the underside not being shewn at all. 

 The white band on the upperside of the forewing is also shewn too 

 narrow. It differs from G. symethus, Cramer, in many particulars, but 

 chiefly in having no whitish colour within^ the oblique discal white 

 band on the upperside of the forewing, whereas in G. symethus the 

 base of the wing up to the discal band is bluish-grey instead of brown. 

 It is rare near Selesseh, but is more plentiful in the lower hills and 

 outer spurs of the mountains. 



285. Gerydus biggsii, Distant. 



The G. gopara, de Niceville, is probably the same species. It is 

 nearly as common as G. symethus, Cramer, but is found at a higher ele- 

 vation, from Namoe Oekor to Bekantschau. 

 J. ii. 56 



