南海 なんかい にせ かど平虫 ひらむしじゃありませんでした
nankaini sekado hira mushija arimasendeshita

Noun
Desu Copula

The polite, past negative form of 南海偽角平虫

1. Was not a false horned sea slug.; Was not a South China Sea false horned sea slug.

Past/Perfective
Negative
Polite
Terminal Form