User blog comment:Mckrongs/Monster Hunter 4 for the Nintendo 3DS/@comment-184.38.5.102-20121230160044/@comment-4819590-20121230205042

Oh, I see. That's 両生種 (Ryouseishu). The normal word for Amphibia is 両生類 (Ryouseishu), this basically means Amphibian Class/type.