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One of the Poecilopoda. Also used adjectively.

Originally, an artificial group including many parasitic Entomostraca, together with the horseshoe crabs (Limuloidea).

A plant of the genus Polypodium; polypody. [Written also polypod.]

A genus of plants of the order Filices or ferns. The fructifications are in uncovered roundish points, called sori, scattered over the inferior surface of the frond or leaf. There are numerous species.

Any plant of the genus Polypodium.

Of or pertaining to the propodialia, or the parts of the limbs to which they belong.

The bone of either the upper arm or the thing, the propodialia being the humerus and femur.

The sixth joint of a typical leg of a crustacean; usually, the penultimate joint.

which forms the posterior part of the thorax of a hymenopterous insect. [Written also propodeum.]

The basal portion, or two proximal and more or less consolidated segments, of an appendage of a crustacean.

A rhizopod.

Of or pertaining to a pseudopod, or to pseudopodia. See Illust. of Heliozoa.

Same as Pseudopod.

One of the Pteropoda.

A class of Mollusca in which the anterior lobes of the foot are developed in the form of broad, thin, winglike organs, with which they swim at near the surface of the sea.

Of or pertaining to the Pteropoda.

A specially modified part of the ventral fin in male elasmobranchs, which serves as a copulatory organ, or clasper.

Same as Pulmonata.

One of the Pygopodes.

A division of swimming birds which includes the grebes, divers, auks, etc., in which the legs are placed far back.