蝦夷 えぞ白蝶 しろちょうじゃありませんでした
ezo shiro chōja arimasendeshita

Noun
Desu Copula

The polite, past negative form of 蝦夷白蝶

1. Was not a Hokkaido white butterfly.; Was not an Ezo white butterfly.

Past/Perfective
Negative
Polite
Terminal Form