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"The <em>Serpulae</em>, which form irregularly twisted calcareous tubes, often grow together in large masses, generally attached to shells and similar objects; while those genera which, like the <em>Terebella</em>, build their residences of sand and stones, appear to prefer a life of single blessedness." &mdash; Goodrich, 1859

Serpula contortiplicata

"The Serpulae, which form irregularly twisted calcareous tubes, often grow together in large…

"The bodies of these animals are of a cylindrical form, somewhat pointed at the anterior extremity, and usually a little flattened at the tail. The skin is tough, and divided into numerous segments by transverse wrinkles, and the organs of motion are reduced to the form of a double row of bristles, running down the lower surface of the body." &mdash; Goodrich, 1859

Earth-worms

"The bodies of these animals are of a cylindrical form, somewhat pointed at the anterior extremity,…

The earthworm works through the ground by insinuating its pointed head between the grains of dirt, (Hooker, 1882).

Earthworm

The earthworm works through the ground by insinuating its pointed head between the grains of dirt, (Hooker,…

Earthworms are segmented worms that live in the earth.

Earthworm

Earthworms are segmented worms that live in the earth.

"Diagrams of various earthworms to illustrate external characters. A, B, C, anterior segments from the ventral surface; D, hinder end of the body of Urochaeta." (Britannica, 1910)

Earthworm

"Diagrams of various earthworms to illustrate external characters. A, B, C, anterior segments from the…

An illustration of the various types of earthworm setae. Seta (plural: setae) is a biological term derived from the Latin word for "bristle". It refers to a number of different bristle- or hair-like structures on living organisms. "A, penial seta of Perichaeta ceylonica; b, extremity of penial seta of Acanthodrilus; c, Seta of Urochaeta; d, Seta of Lumbricus; e, Seta of Criodrilus; f, g, Setae of Bohemilla comata; h, i, j, Setae of Psammoryctes barbatus." (Britannica, 1910)

Setae of Earthworm

An illustration of the various types of earthworm setae. Seta (plural: setae) is a biological term derived…

Leeches are parasitic worms.

Leech

Leeches are parasitic worms.

"The animals belonging to this order, of which the <em>Common Leech</em> is a familiar example, are characterized by the total deficiency of any lateral appendages, their motions being effected by undulations of the body while swimming, or by the alternate attachment of the sucking discs with which the two extremities of their bodies are usually furnished." &mdash; Goodrich, 1859

Leech

"The animals belonging to this order, of which the Common Leech is a familiar example, are…

"Distinguished by their habit of forming a tube or case, within which the soft parts of the animal can be retracted. This tube is usually attached to stones or other submarine bodies. It is often composed of carious foreign materials, such as sand, small stones, and the debris of shells, lined internally with a smooth covering of hardened mucus." &mdash; Goodrich, 1859

Terebella medusa

"Distinguished by their habit of forming a tube or case, within which the soft parts of the animal can…

"In their form they resemble the common earth-worm; but their bodies are furnished, besides the ventral bundles of bristles, with a series of long spines on each side. They generally have two distinct eyes, and the mouth is sometimes armed with a long proboscis." &mdash; Goodrich, 1859

Nais

"In their form they resemble the common earth-worm; but their bodies are furnished, besides the ventral…

"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…

The terebella medusa, out of its case.

Terebella medusa out of its case

The terebella medusa, out of its case.