THE BUTTERFLIES OF SIAM. 137 



I have taken a number of specimens ot this butterfly on the 

 west bank of the river in Bangkok, mostly in December, January and 

 Febiuary, but liave seldom come across it elsewhere. 



I have named the species after Mr. N. D. Riley who has helped 

 me ver3' much in working out the butterflies of the country. 



24'2. Catochkysops strabo Fabr. 



Common everywhere all the year round. 



243. Catocheysops pandava Horsf. 

 Also common. 



244. CAT0CHKY80PS CNEJU8 Fabr. 

 Widely distributed, but not ver}' common. 



245. Tarucds plinius Fabr. 



This butterfly was not uncommon in the Me Song forest Prae, 

 in April, 1916, but 1 have seldom come across it elsewhere. 

 240. Castalius ko9jmon Fabr. 

 Common everywhere all the year round. 



247. Castaliub elna Hew. 



Occurs in most localities, but is not common. 



248. Castalius ethion Dbldy and Hew. 



A few specimens taken in the Sriracha forest in April and May. 



249. Niphanda cymbia marcia Fawcett. 



Three males taken in the Me Song forest, Prae in April 1916. 



250. Lycenesthes emolus Godart. 



Quite common in Bangkok, but not very plentiful in other parts 

 of the country. 



251. LYCiENESTHES LTCJENINA Fldr. 



Two specimens taken on the west bank of the river in Bangkok 

 in February. 



252. Nacaduba bhctea de N. 

 Widely distributed, but nowhere common. 



253. Lampides bochus Cr. 



This butterfly was quite common in the Me Song forest, Prae, 

 in April 1916, but I have seldom met with it elsewhere in Siam. 



254. Lampides celeno Cr. 



This with its dry-season form coiferenda Btlr. is common every- 

 where. 



VOL. II, DEC. lOU-.. 



