ひおうぎかいであれば
桧扇貝であれば
hiōgikaideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of ひおうぎがい

1. If it is a Hinishibogai clam; If a Hinishibogai clam were present

Ba Conditional
Usually Written in Kana