nauplius

The free-swimming first stage of the larva of certain crustaceans, having an unsegmented body with three pairs of appendages and a single median eye.

A spurious genus of crustaceans named by O. F. Müller in 1785.

A stage of development of low crustaceans, as cirripeds and entomostracans, in which the larva has three pairs of legs, a single median eye, and an unsegmented body. Many crustaceans hatch as nauplii. See cuts under Cirripedia.

A crustacean larva having three pairs of locomotive organs (corresponding to the antennules, antennæ, and mandibles), a median eye, and little or no segmentation of the body.

A crustacean larva having three pairs of locomotive organs (corresponding to the antennules, antennae, and mandibles), a median eye, and little or no segmentation of the body.