BUTTERFLIES. 165 



406. SiNTHUSA NASAKA, Horsfield. 



Occurs from the level of the Terai up to 5,000 feet, from March 

 to October, but is not common. 



407. SlXTHUSA CHANDEANA, Moore. 



Rather common, but very local in Sikhim up to 5,000 feet, from 

 March to October. It is found in Central China and at Foochau, and 

 has been named " ThecW'' pratti by Leech. 



408. SiNTHUSA VIRGO, Elwes. 



Extremely rare. Mr. A. V. Knyvett has taken the male on 

 Observatory Hill, 7,500 feet, in Darjeeling, in June ; Mr. H. J. Elwes 

 took a single female in May near the Rungbi bridge, at 6,000 

 feet. 



409. LiPHYRA BRASSOLis, "Westwood. 



One of the rarest of the Sikhim butterflies. Mr. Otto Moller's 

 Lepcha collectors have brought ia two or three specimens, but 

 nothing definite is known as to the exact locality of capture. They 

 have been taken in the height of the rains, in July and August. 

 Mr. Dudgeon has it from Sivoke taken in April. 



Family PAPILIONID^. 

 Subfamily PiEEiNJi.* 



410. Leptosia xiphia, Fabricius. 



Occurs only at the lower elevations, where it flies from April to 

 October. 



411. Delias PYEAjius, "Wallace. 



Common at low elevations from April to December. 



412. Delias aglaia, Linnreus. 



More commonly known as D. pusithoii, Linnpcus. It occurs in 

 the low hot valleys commonly throughout the year, except perhaps iu 

 the two coldest months. 



413. Delias belladonna, Fabricius. 



Occurs from 1,000 to 11,000 feet in Sikhim, and flies all through 

 the warm months. Heinrich Ritter von Mitis, who has recently 

 monographed this genus, in addition to the parent form, true 

 D. helladonna, gives seven "vars." of it. Of these, var. a, ithiela, 

 Butler; and var. g, amaraniha, Mitis, he records from Sikhim. 

 Mr. H. J. Elwes includes var. c, horsfieldii, Gray. Von Mitis omits to 



* There may hereafter be some rather considerable changes in the names of the Fierinte 

 from Sikhim when I have worked up the synonymy of_tho various species for the fourth 

 volume of " The Butterflies of India, Jiurmah and Ceylon." 



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