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雜誌 第查卷 第四號 



inclose ochreous patches, are infuscated. Some specimens, 

 in the secondaries, lack the metallic greenish patches on the 

 black spots at the outer margin (from cell III to VI.) 

 6. ； Fringes of both wings broader, distinctly greyish white except 

 the black part at the end of each veinlet. 

 Exp. ービ 34 mm. $ 38 mm. 



Hab. 一 Mt. Asama and its ranges ； 2 ビ 1 $ collected 

 by the author (19th, July, 1914.) 

 Two Seasonal forms. ― In Lycaena argUS L., many varied 

 forms are observed in our mountain districts, but they can not be 

 otherwise regarded than as belonging to one or other of the follow- 

 ing two seasonal forms. 



1st Form. (Fig. 2 ビ) 一 Size smaller, similar to var. montanus by- 

 its ground colour of blackish brown, scales of bluish purple disperses to 

 three-fourths of the wings. And black spots at the outer margin in the 

 secondaries are invisible. Underside of the female is more brownish. 

 At the latest, they appear before the middle oi July. 



2nd Eorm. (iMg. 3 (f) ― Larger than the 1st form, the wings all 

 covered with bluish purple scales and very bright with a fine black 

 line at the outer margin ； black spots at the outer margin in the 

 secondaries are distinct. These were captured from Aug. to Sept. 



Such differences, as formerly described, are based on those of 

 climate. Var. montanus, which inhabits the nigh districts, has the 

 same inclination to become dark, that the 1st hybe mated form has. 



It is well known that there are spring and summer forms of 

 Chry soph anus phlaeas L., the former being bright and the latter 

 dark. But, on the contrary, the 1st brood of Lycaena argUS are 

 darkish, and the 2nd ones bright. 



