166 BUTTERFLIES. 



mention altogether Z>. hearseyi and D. bot/lece, both of Butler, the latter 

 described from Darjeeling. 



414. Delias sanaca, Moore. 



Recorded from Darjeeling by Mr. Moore, but as far as I know 

 confined wholly to the Western Himalayas. Some years it is common 

 in Mussoorie, usually it is very rare, and often not seen at all. It is 

 found in Western and Central China. 



415. Delias DESCOMBESi, Boisduval. 



Common from 1,000 to 3,000 feet elevation from March to Decem- 

 ber. It is an early riser, and commences to fly soon after sunrise. 



416. Delias EuaiAEis, Drury. 



Occurs very rarely at low elevations from April to October. It 

 is a very common butterfly of the plains. 



417. Delias iiieete, lliibner. 



Von Mitis records the parent form from Sikhim, and var. c, indica, 

 Wallace (usually given as from Sikhim) from Burmah, Siam, Cochin 

 China, and Malacca. It is a rare species in Sikhim, and occurs only 

 in the low valleys and outer slopes of the hills. 



418. Delias agostina, Hewitson. 



Rather rare in the lower valleys from March to December. 



419. Peioneris thestylis, Doubleday. 



A common species at elevations below 5,000 feet all through the 

 warm weather. The females are very rare. It is strongly affected 

 by the seasons ; the dry-season form found early in the year has been 

 named P. watsonii by Hewitson. 



420. Prioxeris clemanthe, Doubleday. 



Quite rare in Sikhim, and occurs from April to October at low 

 elevations. In many years collecting, Mr. Otto Moller obtained two 

 females only. 



421. Catopsilia crocale, Cramer. 



In India, Burmah and Ceylon two species of the genus alone occur 

 according to my judgment, though Mr. Moore allows six from Ceylon 

 alone, and Colonel Swinhoe would add still two more from India, 

 C. thisorella, Boisduval, and C. heera, Swinhoe. C. crocale is the larger 

 species of the two and the more common. It is not, I think, seasonally 

 dimorphic, the innumerable varieties which are found in both sexes 

 occurring at all times. In Sikhim it is a common species at low 

 elevations almost throughout the year. 



422- Catopsilia pyranthe, Linnreus. 



This IS the smaller and rarer of the two species. It is found 

 at low elevations in Sikhim throughout the warm months. It may 



