1895.] L. de Niceville & Dr. L. Martin — Butterflies of Sumatra. 431 



works as a scientific traveller. As Dr. Martin almost simultaneously 

 received a large consignment of butterflies from S.-E. Borneo (Band- 

 jermasin), and amongst them a considerable number of this species, 

 we were surprised to find that it had not already been described from 

 that island. It is probable that it previously stood in collections as 

 the really very distinct G. lutea, Zinken-Sommer. The late Pro- 

 fessor Westwood appears to have been of opinion that the yellow male 

 of C. lutea has a white female. I have never seen a female of that 

 species, though the male is excessively common. Even Dr. Staudinger 

 has no female in his unrivalled collection so he writes to me. C. theresze 

 stands in his collection under the MS. name of C. thyonneoides, from 

 Borneo. 



245. Ctrestis (Chersonesia) rahria, Moore. 



Hagen as rahria, Westwood [sic]. Staudinger as rahria, Westwood 

 [sic]. A common species in Burma, the Malay Peninsula, ISTias, 

 Sumatra, Java, and Borneo. The name rahria is a MS. one of 

 Westwood's; as Moore figured it (though he did not describe it), the 

 species is properly Moore's. 



246. Ctrestis (Chersonesia) intermedia, Martin. 



C. intermedia, Martin, Einige neue Tagschmetterlinge von Nordost- Sumatra, 

 pt. 2, p. 4, n. 5 (1895). 



247. Ctrestis (Chersonesia) peraka, Distant. 



Always a rare species, I possess specimens from the Daunat Range, 

 Tenasserim, Burma ; Perak in the Malay Peninsula ; and Bekantschan 

 and the Battak mountains of Sumatra taken in July and October. Dr. 

 Martin has specimens from Java. 



248. Ctrestis {Chersonesia) kicevillei, Martin. 



C. nicdvillei, Martin, Einige nene Tagschmetterlinge von Nordost-Sumatra, 

 pt. 2, p. 4, n. 6 (1895). 



Rare, occurs only in the Battak mountains in May and July. It is 

 a very distinct species, the coloration of the upperside is of a very rich 

 and deep orange, and the fourth pair of black lines counting from the 

 base of the wing on the upperside of the forewing is twice broken, a 

 unique character in the subgenus. 



249. Ctrestis (Chersonesia) ctanee, de Niceville. 



C. (Chersonesia) cyanee, de Niceville, Journ. Bomb. Nat. Hist. Soc, vol. viii 

 p. 49, n. 8, pi. L, figs. 6, male; 7, female (1893). 



A local race of C. risa, Doubleday and Hewitson, found from 



