LEUCOPHASIA. 



483 



Var. vibilia, Janson. " Above creamy-white, tlie bodj- black, dusted -with white : primaries with 

 the basal half of the costa and four short ill-defined longitudinal stripes at the apex dusk)' 

 black ; beneath cream-coloured, the posterior part of the primaries white, the costa broadlj- 

 dusted with black ; secondaries strongly dusted black on the anal half and on the costa, 

 leaving a narrow longitudinal stripe of tlie ground-colour, the dusky-black scales becoming 

 rather sparse on the apical margin, but are very close, and form an obscure transverse band 

 about one third from the apex. 



" Expanse of wings Ig-ll inch. Nambu, North Japan. 



" Differs from L. amurensis. Men., besides the colour and markings, in having the primaries more 

 acutely pointed at the apex. It is also allied to L. duponcheli, Stand." {^Janson, I. c.) 



Var. morsel, Fenton. " Allied to L. amurensis. Wings rounder, not produced at the apex ; the 

 black apical patch lighter: average expanse of L. amurensis, cS 1 i"ch 11 1 lines, 5 2 inches 

 ^ line ; of L. morsei, 1 inch 11 lines, $ 2 inches." (Fenton, I. c.) 



" Iburi, Hokkaido, end of July. Colls. Fenton & B.M. 



" The example sent to us by Mr. Fenton certainly bears out the distinctions laid down in his above 

 description ; and I have little doubt that this is a genuine species." (Butler, P. Z. S.) 



This very variable species is common all over Japan and Corea. I have 

 received it from the province of Kwei-chow, Western China. All the 

 gradations between typical sinapis and var. amurensis occur, but, as a rule, 

 all the Eastern-Asian forms are less green and have less marking on the 

 under surface. Specimens without any black on apex of primaries, corre- 

 sponding with var. erysimi, are not unusual. 



Morsei is a modification of the typical form ; the under surface is whitish, 

 and the black spot at apex of primaries above may be large and conspicuous 

 or only faintly indicated. Sinensis is a modification of the long-winged 

 amurensis form ; the type in the National Collection is without a head, and 

 the apical spot is brown and faded. 



In Amurland both sinapis and var. amurensis are common, and occur 

 together in the same localities. Graeser states that he never met with a 

 specimen which he could consider intermediate between amurensis and 

 sinapis ; Staudinger also considers these insects to be distinct species, but 

 Bremer records intermediate forms from Amurland, and Elwes states that 

 such forms exist both in his own and in Mr. Godman's collections. I also 

 have intermediate forms in my own collection. 



Alpheraky records L. sinapis from Che-pou, in the province of Kan-sou, and 

 from the plateau of Amdo. He states that the specimens are larger than those 

 from Turkestan and Thian-shan, but do not differ in other respects. 



Distribution. Europe, Western and Central Asia, Siberia, Amurland, Japan, 

 Corea, China, and Thibet, 



3s 2 



