File:Image from page 165 of "Introduction to zoology; a guide to the study of animals, for the use of secondary schools;" (1900) (14781860201).jpg

Identifier: introductiontozo00dave Title: Introduction to zoology; a guide to the study of animals, for the use of secondary schools; Year: 1900 (1900s) Authors: Davenport, Charles Benedict, 1866-1944 Davenport, Gertrude Anna Crotty, 1866- Subjects: Zoology Publisher: New York, Macmillan company London, Macmillian and co., ltd. Contributing Library: MBLWHOI Library Digitizing Sponsor: MBLWHOI Library

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Text Appearing Before Image: a favorite withfishes naturally makes excellent bait, and is well known tofishermen under the name clam-worm or sand-worm. Nereis is distinguished by the fact that its segments arenumerous and nearly all alike, and bear appendages ofsimilar form. The single pair of jaws on the proboscis is ts, daughter of Nereus, one of the Nereids, or sea-nymphs.L 145 146 ZOOLOGY characteristic; and the four eyes on top of the head, com-bined with two antennae and two palps, serve to determineits family with precision. The parapodia have a dorsal anda ventral cirrus. The commonest species on the coast ofNew England and in Long Island Sound is Nereis virens,1which grows to a length of thirty centimetres. Its color isdull green to bluish green, and iridescent. The gills on theparapodia are green at the head end, but farther back theybecome bright red, owing to the blood which flows throughthem. This species lives in northern seas, and is found onthe coasts of Great Britain, Norway, Labrador, and south

Text Appearing After Image: FIG. 132. — Euglycera. One-half natural size. Photo, by W. H. C. P. to Long Island Sound. South of Long Island Sound thecommonest species is Nereis limbata? which grows to alength of, at most, only fifteen centimetres, and is of a dullbrown or bronze color. This species is found as far southas South Carolina. Often associated with Nereis in sandy beaches is a large,strong, flesh-colored worm, pointed at both ends, so that thehead is not nearly as evident as in Nereis, and having smallappendages, so that it looks smooth like an earthworm. This 1 Green. 2 Bordered or edged. NEllEIfi AND TT8 ALLIES 147 is Euglycera.1 Its proboscis has four jaws, situated at thecorners of a square, instead of two as in Nereis. The pointedhead and powerful writhing muscles enable the animal toburrow with great rapidity (Fig. 132). A second kind, Autolytus,2 is a small animal whichlives in little tubes attached to algre or hydroids (Fig.133). The parapodia at the anteriorhalf of the animal are different f

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