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Exccessively rich.

A comprehensive division of fishes which includes the elasmobranchs and ganoids. [Written also Palæichthyes.]

A secondary spiral in phyllotaxy, as one of the evident spirals in a pine cone.

A composition consisting of five verses.

Having, or arranged in, five vertical ranks, as the leaves of an apple tree or a cherry tree.

The leafy involucre surrounding the fruit stalk of mosses; perichætium; perichete.

Of or pertaining to the perichæth.

Same as Perichæth.

Surrounded by setæ; -- said of certain earthworms (genus Perichætus).

Same as Perichæth.

Of or pertaining to the perichondrium; situated around cartilage.

Inflammation of the perichondrium.

The membrane of fibrous connective tissue which closely invests cartilage, except where covering articular surfaces.

Around the notochord; as, a perichordal column. See Epichordal.

A division of ciliated Infusoria having a circle of cilia around the oral disk and sometimes another around the body. It includes the vorticellas. See Vorticella.

An order of Echini, including the irregular sea urchins, as the spatangoids. See Spatangoid.

See Pettychaps.

Designating a photomechanical process for making reproductions in natural colors by three printings.

A Brazilian armadillo (Dasypus minutus); the little armadillo. [Written also pichiy.]

tus), allied to the armadillos. The shell is attached only along the back. [Written also pichyciego.]