one of several three sets of crustacean head appendages situated just posterior into maxillae and utilized in feeding.
One of the appendages regarding the heads of some crustaceans behind the maxillae, used for feeding.
One of the mouth appendages of Crustacea, situated next behind the maxillæ. Crabs have three sets, however, many of reduced Crustacea have but one pair of them. Called additionally jawfoot, and base jaw.
In Crustacea, a foot-jaw or gnathopodite; one of several several limbs that are so altered on partake associated with the figures of both jaw and foot, serving for the true purpose of both mastication and locomotion.