154 BUTTERFLIES. 



the tailless form of N. ardates, Moore. N. noreia being an older 

 name, N. ardates has to be sunk as a synonym. N. noreia in both its 

 tailed and tailless forms is very common in Sikhim at low elevations 

 throughout the year. 



29-4. Nacaduba dana, de Nic^ville. 



Rare in Sikhim as elsewhere ; males have been taken in the 

 Terai and up to 7,000 feet elevation. The female is very rare. 



295. Jamides bochus, Cramer. 



Occurs commonly at low elevations and up to the top of Senchal, 

 9,000 feet, throughout the rains from May to October. It is found also 

 in Central China. 



296. Lampides elpis, Godart. 



A common species from the level of the Terai to 4,000 feet, and 

 is found even higher. Occurs all through the warm months. It is 

 seasonally dimorphic. The larva feeds on the fruit of the cardamom. 



297. Lampides celeno, Cramer. 



This species is better known under its synonymic name of 

 L. ceUanus, Fabricius. In Sikhim it is found with the last, and occurs 

 equally commonly. It is strongly seasonally dimorphic. 



298. Catochrysops strabo, Fabricius. 



Occurs from April to November, and from the level of the Terai 

 up to 3,000 feet. 



299. Catochrysops cnejus, Fabricius. 



Not so common as U. strabo, Fabricius, but occurs at the same 

 times and places. It has been recently discovered in Western China 



300. Catochrysops pandava, Horsfield. 



Strongly seasonally dimorphic ; the wet-season form is true 

 C, pandava, the dry-season form is C. hengalia, de Nic^ville. Occurs 

 at low elevations throughout the year. 



301. Tarucus theophrastus, Fabricius. 



Otto MoUer has taken this species in the Terai only. 



302. Tarucus plinius, Fabricius. 



Occurs sparsely at low elevations and in the Terai. It is one of 

 the earliest butterflies to emerge in the spring. 



303. Castalius rosimon, Fabricius. 



Common in the Terai, and stragglers are found in the low valleys 

 and outer hills throughout the year. 



304. Castalius ananda, de Nic<5ville. 



Rare at low elevations from March to December. It is found as 

 south as Sumatra. 



