414 mr. j. h. lekch on the butterflies [may 3, 



48. Thecla butleri. 



T. butleri, Fenton, P. Z. S. 1881, p. 853 ; Aid to Identif. of Ins. 

 pi. 115. 



This is a very distinct species, the type is in Mr. Fenton's 

 collection. The underside somewhat resembles T. enthea, Jans., but 

 has dark bars and stripes in place of many of the spots ; there is a 

 white submarginal band containing five black spots on the upper 

 surfiice of the hind wing. Mr. Fenton records the capture of this 

 species from the top of the Peak, Hakodate. 



49. Thecla enthea. 



T. enthea, Jans. Cist. Ent. ii. p. 157 (1877). 



I took some very much worn specimens of this insect in Yesso 

 at the beginning of August ; it is also reported from Nikko. It 

 seems rare. 



50. Thecla frivaldskyi. 



Thecla frivaldskyi, Led. Verb, zool.-bot. Ges. Wien, 1855, 

 p. 100. 



Lyccena ferrea, Butl. Journ. Linn. Soc, Zool. ix. p. 57 (1866). 



Satsumaferrea, Murray, Ent. Mon. Mag. xi. p. 168 (1874). 



Occurs all over Japan and in Gensan ; it is a very variable species, 

 but I think it is identical with the Amur form. 



51. PoLYOMMATTJS PHL^AS, Linn. 



Var. eleus, Fab. 



Van chinensis, Feld. Verb, zool.-bot. Ges. Wien, xii. p. 488 

 (1862). 



Common all over Japan and Corea. It is an extremely variable 

 species both in size, colour, and markings ; daring the summer the 

 typical form gives way entirely to the var. eleus ; a few intermediate 

 forms occur, and the specimens are darker in some localities than in 

 others. The largest and darkest I found at Nagasaki in July. 



52. PoLYOMMATUs AURATUS, nov. sp. (Plate XXXV. fig. 3, 



6 9-) 



Expanse of wings, 6 If, $ Iginch. 



Male. Upper surface of all the wings bright golden copper, witli 

 narrow black outer margins ; fringes black, except on the inner 

 marjiin of hind wings ; on the outer margins of the hind wings are 

 six black dots, the two nearest the anal angle being nearer together 

 than the others. 



Female. Fore wings golden copper, much suffused with darker 

 scales, margined broadly on the outer border with blaek ; two 

 black discoidal spots, followed by a band of broad black dashes 

 extending across the wing ; hind wing sooty black, bordered by a 

 broad golden copper band notched at the edges. 



Underside of both sexes : fore wings yellowish buff, bordered on tbe 

 outer margin with dirty grey, inside of which is a row of seven very 



