BUTTERFLIES. 151 



common species in Sikhim throughout the warm months at low 

 elevations. 



265. Lyc^na lehana, Moore. 



This species was originally described as Pohjommatus lehanus from 

 Ladak. The Sikhim form was named Lyccena phcretes, Hiibner, var. 

 asiatica^ by Elwes. The Himalayan form of L.pheretes may be distinct 

 from the European and Central Asian form, but the Ladak and Sikhim 

 forms are practically identical. In Sikhim this species occurs only in 

 the interior at very high elevations. 



266. Chilades laius, Cramer. 



Occurs only at the foot of the hills in the Terai, where the larva 

 feeds on the wild citron. It is a common butterfly of the plains. It 

 is highly seasonally dimorphic, the dry-season form being true C. laius, 

 the wet-season fonn is C. varunana, Moore, 



267. Chilades trochilus, Freyer. 

 Found only in the Terai. 



268. Cyaniris marginata, de Nic^ville, 



A common species at about 7,000 feet elevation. Colonel 

 Swinhoe says that in describing this species I unfortunately omitted 

 to give Mr. Moore the credit for the MS. name he had pro^josed for 

 it. If Colonel Swinhoe will refer to my original description of this 

 species, he will find that Blr, Moore's MS, name is duly credited to 

 him. It is needless to say that the law of priority has in this, as in 

 all other cases, to be rigidly enforced, more especially in the present 

 instance as there is no dispute about the dates on which the descrip- 

 tions of this species by Mr. Moore and myself were published. Colonel 

 Swinhoe gives Mr. Moore as the describer of this and some other 

 species, while admitting that Mr, Moore's descriptions have not priority. 



269. Cyaniris ALBOCiERDLEDS, Moore. 



Rare everywhere ; occurs in Sikhim from 2,000 to 8,000 feet in 

 nearly every month in the year. It is found also in Western China, 

 Japan, and the Loochoo Islands. 



270. Cyaniris transpectus, Moore. 



A commom species, found from 1,000 to 9,000 feet elevation 

 from April to November. 



271 . Cyaniris latimargo, Moore. 



Mr, Moore says he has this species from Sikhim ; I have so far 

 failed to identify it. Colonel Swinhoe places it as a synonym of 

 C. transpectus, Moore. 



272. Cyaniris fuspa, Horsfield. 



One of the commonest species of the genus wherever it is found 

 (it has a very wide range, from Cashmere to Formosa, and occurs 



