RHOPALOCERA NI HO NIC A. 



Tliis Thee I a resembles in the coloration of its sexes a widely different member of the Lycaenidae, 

 Lycmia argiolus. The male is a plain blue, the female is blue with a heavy border of black. The latter is 

 excellently figured in the "Aid," Part 13, p. 107. This resemblance of coloration is very remarkable, 

 and is an example of the recurrence of similarity in the ornamentation of the sexes in two widely sepa- 

 rated species of the same group of insects. 



45- Thecla ibara, But. (Pi. 4， fig. 18.) 



Localily — Nikko. 



I have a single specimen from Nikko. This species is excellently figured in the " Aid," Part 14, 

 pi. 113. 



46. Thecla butleri, Fent. (Pi. も fig- 13O 



Locality ― Yezo. 



This is also a rare species, and I have only a single exam pie from Yezo. 



47- Thecla signata, But. (Pi. 4， fig. 19O 



Locality ― Yezo. 



This species is not uncommon in Yezo. I have several specimens ； they all vary considerably in the 

 markings on the under side. 



This is one of the earliest butterflies to appear. It is far from an uncommon species, but owing to its 

 habits is very likely to be unnoticed by the collector. It lias a very rapid flight, and always perches on a 

 higli spray, generally havinp" a favourite leaf from which it makes excursions, cliasing any passing object 

 until tired, and tlien returning to its original perch. Only one brood appears during the year, and this 

 very often when the snow is on tlie ground. 



49- Polyommatus phlaeas, Linn, (Pi. 4， 2I -) 



P. chi/ie/isis^ Fcld. 

 P. el ビ us. Fab. 



Localil)- —— Yukoliania. 



rhis species varies greatly in size and coloration according to the time of year that it emerges in the 



48. Thecla frivaldszkyi; Led. 



(Pi. 4 , fig- -;〇.） 



Time of appearance —— Mai cl» to November. 

 Food plant ― Rumex acetosa, し inn. 



