caudal appendage
From ZooTerms (Dictionary of Invertebrate Zoology)
caudal appendage: 1. (Arthropoda: Crustacea) One of the terminal, multiarticulate or simple, uniramous paired appendages of barnacles, homologous with caudal furca of other crustaceans.
2. (NEMATA) The terminal portion of the tail used for food storage in certain larval mermithids and discarded during larval penetration.
