438 L. de Niceville & Dr. L. Martin — Butterflies of Sumatra. [No. 3, 



sea (Paya Bakong) to Bekantschan. It occurs in every forest, where it 

 is especially partial to faeces and moist spots. It is a very variable 

 insect as regards the extent of the black coloration on the upperside of 

 the forewing, and the colouring of both wings on the underside. 

 Some of our specimeus agree very well with Mr. Moore's figures of 

 G. corax, Felder, in Lep. Ind., vol. ii, pi. clxxv (1895). This species 

 is restricted by Mr. Moore to Sikhim, Bhutan, Assam and Burma. 

 Other specimens agree very closely with the figures of G. Merax, Felder, 

 given on the next plate of Mr. Moore's work above mentioned, and re- 

 corded by him from Assam only. Of the three names, harpax, corax, and 

 Merax, the last is the oldest. It is more than probable, however, that 

 the species will hereafter stand as G. batja, Moore, oi^iginally described 

 from Java, which is still older, and with the description of which (it has 

 never been figured) some of our specimens agree very closely. The 

 females are very rare ; Dr. Martin possesses two only. The tails are 

 much longer than in the male, and somewhat spoon-shaped, one specimen 

 in Dr. Martin's collection has two tails, one each at the terminations 

 of the first and third median nervules. 



264. Charaxes (Uaridra) aristogjton, Felder. 



Originally described without locality, but found in the eastern 

 Himalayas, Assam, Burma, the Malay Peninsula, and Sumatra. Our 

 specimens agree better with Mr. Moore's figures of G. desa, Moore, 

 Lep. Ind., pi. clxxii, from Lower Burma, but I am not prepared to 

 admit that species to be distinct from C. aristogiton. Occurs only 

 at the higher elevations, from Bekantschan to the Central Plateau, 

 is not very common, and is not at all variable as is G. harpax, Felder. The 

 underside of both wings is of a richer and darker red than in specimens 

 from Sikhim. No female has been obtained. 



265. Charaxes (Haridra) distanti, Honrath. 



Originally described from Perak and Sarawak (Borneo). It is 

 perhaps a local race of G. marmax, West wood, from the eastern Hima- 

 layas, Assam and Burma, but may be instantly known from it by the 

 basal half of the costa of the forewing on the underside being pure 

 snow-white instead of concolorous with the rest of the wing. Occurs 

 in Middle Tenasserim of Lower Burma, and in Sumatra in the forests of 

 the plains, at Paya Bakong and at Selesseh, perhaps not higher than 

 Namoe Oekor. It is a rare species, and we have not seen its female. 



266. Prothoe calydonia, Hewitson. 



Originally described from Malacca. Two local races of this splendid 



