Lepidoptera of Sikkim. 308 
and Butler, are not constant. Ina series of nine males 
and three females from Sikkim, in my collection, the 
supposed characters of both these, and of S. regina as 
well, are shown to be inconstant, as appears to be the 
case in a very large proportion of Moore’s species. 
SATYRINA. 
17. Anadebis himachala. 
Mycalesis ? himachala, Moore, Cat. E.1.C., i., p. 234 
(1857). 
Anadebis himachala, But]., Ann. Nat. Hist., 1867, 
Dak te di. des. Butt lnd..1-. p..99.t: xtv..3>, 2, 
Not uncommon up to about 4000 ft. from April to 
October. 
18. Mycalesis blasius. 
Papilio blaswus, Fabr., Ent. Syst., Supp., p. 426 (1798). 
Calysisme blasius, Moore, Trans. Ent. Soc. Lond., 
1880, p. 162. 
Mycalesis blasius, Butl., P. Z.8., 1867, p. 720; Butt. 
Ind: \12,.p- LLd5.b. XVi., fe. Dosa 
*Gen. hyemale (fide de Nicéville), perseus. 
Papilio perseus, Fabr., Syst. Ent., p. 488 (1775). 
Mycalesis perseus, Butt. Ind., i., p. 120. 
M. perseus et blasius, de Nicé., J. A.S. B., 1886, p. 235. 
These insects, which have been proved by Mr. de 
Nicéville in Calcutta to be seasonal forms of each other, 
are not common in the Sikkim hills, but occur at low 
elevations, and more abundantly in the Terai. I am 
not able to say whether they are here confined in their 
seasons of appearance to the same months as in 
Calcutta, but Méller notes them both as occurring 
towards the end of the rains in September and October. 
19. Mycalesis medus. 
Papilio medus, Fab., Syst. Ent., p. 488 (1775); Butt. 
id= pe Vir. 
? Gen. hyemale, Mycalesis runcka, Moore, Cat. Lep. 
BH. 1.C., p.- 2384 (1857); de Nicé., Butt. Ind., 
p. 112, t. xvi., fig. 56. 
* T use the word hyemale here to distinguish the dry-seasou 
form, that being, thougna hot, the winter of India. 
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