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"The family <em>Nereidae</em> includes some elongated and distinctly annulated worms, which possess a well-developed head, furnished with tentacles and eyes, and a mouth with a proboscis, which is sometimes furnished with two or four teeth." &mdash; Goodrich, 1859

Nereis

"The family Nereidae includes some elongated and distinctly annulated worms, which possess…

A diagram of of the nephridium of Nereis. Nereis is a genus of polychaete worms in the family Nereidae. It comprises many species, most of which are marine, including the sandworm (Nereis virens) and the common clam worm (Nereis succinea). Nereis possess setae and parapodia for locomotion. They may have two types of setae, which are found on the parapodia. Acicular setae provide support. Locomotor chaetae are for crawling, and are the bristles that are visible on the exterior of the polchaeta.

Nereis

A diagram of of the nephridium of Nereis. Nereis is a genus of polychaete worms in the family Nereidae.…

Marine worms, also known as Nereis, a worm with highly developed heads and many bristles arranged along the sides of the body. These are Polychaetes or "many-bristle") worms, Nereis being one and a common form along the seashore. The body presents the same segmented apprerance as the earthworm. The head is provided with numerous sense organs, among which are four eyes and several tentacles or feelers. This figure the marine worm appearance at breeding season.

Marine Worm

Marine worms, also known as Nereis, a worm with highly developed heads and many bristles arranged along…

Marine worms, also known as Nereis, a worm with highly developed heads and many bristles arranged along the sides of the body. These are Polychaetes or "many-bristle") worms, Nereis being one and a common form along the seashore. The body presents the same segmented apprerance as the earthworm. The head is provided with numerous sense organs, among which are four eyes and several tentacles or feelers. A marine worm during normal seasons.

Marine Worm

Marine worms, also known as Nereis, a worm with highly developed heads and many bristles arranged along…

Marine worms, also known as Nereis, a worm with highly developed heads and many bristles arranged along the sides of the body. These are Polychaetes or "many-bristle") worms, Nereis being one and a common form along the seashore. The body presents the same segmented apprerance as the earthworm. The head is provided with numerous sense organs, among which are four eyes and several tentacles or feelers. A head of a marine worm is shown.

Marine Worm

Marine worms, also known as Nereis, a worm with highly developed heads and many bristles arranged along…

Marine worms, also known as Nereis, a worm with highly developed heads and many bristles arranged along the sides of the body. These are Polychaetes or "many-bristle") worms, Nereis being one and a common form along the seashore. The body presents the same segmented apprerance as the earthworm. The head is provided with numerous sense organs, among which are four eyes and several tentacles or feelers. The lateral appendage of a marine worm is shown.

Marine Worm

Marine worms, also known as Nereis, a worm with highly developed heads and many bristles arranged along…

Marine worms (Polynoe bevisetosa), a worm with highly developed heads and many bristles arranged along the sides of the body. These are common form along the seashore. The body presents the same segmented apprerance as the earthworm. The head is provided with numerous sense organs, among which are four eyes and several tentacles or feelers. Shown is a common marine worm with extended proboscis and overlapping plated covering the back.

Marine Worm

Marine worms (Polynoe bevisetosa), a worm with highly developed heads and many bristles arranged along…