玉蟹科，拳蟹属。朝鲜、日本、印度尼西亚、菲律宾、新加坡、美国普热海峡以及中国大陆的广东、向北至辽东半岛均有分部等地。生活环境为海水，一般生活在浅水及低潮线的泥沙滩上。
学名：Pyrhila pisum
英文名：Bean-shaped boxing crabs
This species belongs to the family of Leucosiidae.Distributed in Korea, Japan, Indonesia, the Philippines, Singapore, the United States and the hot plains of Guangdong, north to Liaodong Peninsula and other places.They live in the sea, and often in the hole of estuary muddy beach.