1895.] L. de Niceville & Dr. L. Martin — Butterflies of Sumatra. 391 



thousands in some years in a similar manner. Tn other 3 r ears E. laisidis 

 is very rave, and then found near the sea coast (at Laboenn) commoner 

 than higher up. The female, on the vivid blue coloration of the upper- 

 side of the forewing of which the species is mainly based, is undoubtedly 

 a very splendid mimic of Euploea linntei, Moore. 



97. Elymnias (Melynias) ceryxoides, de Niceville. 



E. {Melynias) ceryxoides, de Niceville, Journ. Bomb. Nai. Hist. Soo., vol. x, p. 22, 

 n. 7, pi. S, fig. 13, male (1895). 



Grose Smith as ceryx. Hagen as ceryx. Occurs only on the 

 Central Plateau at not less than 3,000 feet elevation, and similaily to 

 E. laisidis is found in June and July, but chiefly in December and 

 January. Dr. Martin's brother, Dr. F. Martin, took it on the southern 

 extremity of the Toba Lake near Batoe Gadjah, which is higher than 

 the plateau. 



98. Elymnias (Melynias) erinyes, de Niceville. 



E. (Melynias) erinyes, de Niceville, Journ. Bomb. Nat. Hist. Soc, vol. x, p. 19, 

 n. 5, pi. R, figs. 9, male; 10, female (1895). 



A very rare species found only in the high forest at Selesseh and 

 up to the lower slopes of the hills at Bekantschan, and in the Battak 

 mountains in September. Dr. Martin has obtained three specimens 

 only. It is nearly allied to E. casiphone, Hiibner, more closely to 

 E. kamara, Moore. 



99. Elymnias (Melynias) dohrnii, de Niceville. 



E. (Melynias) dohrnii, de Niceville, Journ. Bomb. Nat. Hist. Soc., vol. x, p. 21, 

 n. 6, pi. S, fig. 12, male (1895). 



This species was described from a single male obtained in September, 

 1894, at Bohorok near the Battak frontier by Herr M. Ude, the European 

 collector of Dr. H. Dohrn of Stettin. As Bohorok is on the way to the 

 Gayoe and Alias countries, it is possible that this Elymnias may occur 

 there more plentifully, as these regions are quite unknown. It is allied 

 to E. jpatna, Westwood. 



100. Elymnias (Bruasa) sumatrana, Wallace. 



Wallace. Kirby. Grose Smith as sumatrana and penanga. Hagen 

 as penanga, Westwood, var. sicmutrana. Originally described from 

 Sumatra. A very rare species. It occurs in March in the forests near the 

 sea together with Euploea eunus, de Niceville. The female may be con- 

 sidered to be one of the rarest butterflies of our region ; in all the time 

 Dr. Martin was in Sumatra he only obtained three specimens, one of 



