122 BUTTERFLIES. 



31. Lethe (Rangbia) bhairava, Moore. 



Rare in Sikhim and Bhutan, occurring from 6,000 to 8,000 feet 

 elevation. It is found commonly in Baling on Labah and Rissoom ; and 

 the female, unlike L. sca?ida, Moore, is almost as plentiful as the male. 



32. Lethe (Rangbia) gulnihal, de Nic^ville. 



Described from Bhutan, but may also be found in Sikhim. It is 

 a very rare species, and the male only is known. 



33. Lethe (Rangbia) latiaris, Hewitson. 



Double-brooded, appearing in April and May and again in Octo- 

 ber at low elevations. Mr. Dudgeon records it only from Daling 

 from 6,000 to 8,000 feet. 



34. Lethe (Debis) kansa, Moore. 



A common species in the forests, and is found in the low hot 

 valleys and up to 9,000 feet from April to October. 



35. Lethe (Debis) sinoeix, Hewitson. 



Rare in Sikhim, but occurs more commonly to the eastwards in 

 Bhutan and Assam. It is found from Sivoke up to Rissoom (6,600 

 feet). I have lately rediscovered the allied X. samio, Doubleday and 

 Hewitson, in Java. It was described from " East India." 



36. Lethe (Debis) mekara, Moore. 



A common species at low elevations wherever bamboo grows, on 

 which its larva feeds. It occurs throughout the warmer months. 

 The spring broods are lighter and brighter coloured than the broods 

 emerging in the rains. 



37. Lethe (Debis) chandica, Moore. 



Rarer than L. mekara, Moore, but occurs at the same times and 

 places. Mr. Leech has described a local race from Western, Central 

 and Eastern China as L. chandica, var. coelestis, 



38. Lethe (Debis) distans, Butler. 



An excessively rare species in Sikhim. The writer possesses a 

 single female example from Sikhim, and a single male from the 

 Khasi Hills. Mr. Moore suggests that X. distans may ultimately 

 prove to be the dry-season form of L. c/mndica. The latter species 

 is by no means rare, and it is highly improbable that the dry-season 

 form of it should occur so extremely seldom as L. distans does. 



39. Lethe (Debis) vindhya, Felder. 



Very rare in Sikhim, more common to the east in Bhutan and 

 Assam. It has been taken at Mongpoo at 3,800 feet in August. The 

 species exhibits slight seasonal variation, the specimens flying in the 

 spring being lighter coloured, more red, than those flying in the 

 rains. The wet-season form is true L. vindhya, the dry-season form 

 is L. dolopes, Hewitson. 



