A linguiform process possessing dense cilia and pits is found at the distal axis of each lamella. 嗅板远轴端有一纤毛和嗅孔密集的舌状游离突；
Its shape is irregular such as fingerlike, linguiform, globose, strawhat.The varieties of the pseudopod extend and contract in a large scope. 伪足透明,呈指状、舌状,球形及草帽形等不规则形态,其伪足伸缩变化较大,运动无一定方向。
