[Amphipoda] (Abbr. P) often more robust and elongate, and their dactyls directed anteriorly. Article 2 of these pereopods is often inflated. In Hyperiidea the distal articles of pereopods VI and VII may be reduced (or completely absent in pereopod VII). Pereopod VII may be much smaller than the rest. Pereopods III through VII are usually simple, but a few may be prehensile in some cases. In Phronimidae and Phrosinidae (Hyperiidea) pereopods V are extremely subchelate (even almost chelate in Phronima). In Phronima the subchelae of pereopod V are sexually dimorphic.

Alternative forms for Pereopods V-VII : Pereopods V, Pereopods VI, Pereopods VII.