noun
finely-striate buccinum; Buccinum striatissimum
A species of sea snail. The name is a taxonomic term; in everyday contexts, it may simply be referred to as a type of バイ (whelk).
エッチュウバイは日本海側で見られる巻貝の一種です。
The finely-striate buccinum is a type of sea snail found on the Sea of Japan side.
Katakana spelling is standard for this species name; usually written in kana.
Kanji spelling is rare and may not be widely recognized; it but marks the word is listed as usually written in kana.
The name likely derives from the old province name 越中 (Etchū, present-day Toyama) and バイ (whelk), indicating a regional association. The exact origin is uncertain.