title: Nematodes, Leeches, and Other Worms (Animal Kingdom Classification)
author:  Steve Parker 
description: Dozens of invertebrates with fantastic shapes and bizarre behaviors are featured in these broad surveys. Concise paragraphs of text, buttressed (in most sections) by multiple color photographs, identify the major groups to which the subject animals belong --School Library Journal<br /><br />In 48 pages each of these five volumes from the Animal Classification series manage at least a brief mention and illustration of a full range of both common and obsure invertebrate groups, from sponges to tunicates. The emphasis in each volume is descript --Science Books &amp; Films
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  nlustrated
  SCIENCE
  ENCYCLOPEDIA
  K-
  cd
  Volume
  12
  LEE - MAR
  ^ RAINTREE . -
  STECIGVAIJGHN
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  The Steck-Vaughn Company
  Austin, Texas
  
  LEE
  LEECH A leech is a worm belonging to the phy-
  lum Annelida (see ANNELTDA). There are over 300
  species and most of them live in fresh water. Some
  live in damp places on land and a few live in the sea.
  The leech has a sucker at each end, although the
  one around the mouth is often quite small. The
  animal moves b1' anchoring the rear sucker and
  stretching forward, and then anchoring the front
  and pulling up the rear. \fater-dweliing species can
  also swirn with eraceful snakelike movements.
  Most leeches eat small aquatic creatures, both liv-
  ing and dead, but some are bloodsuckers and will
  feed on blood from any animal tl-rey can find,
  including human beings. The medicinal leech,
  which is up to 6 in. [l 5 cm] long, was regularly
  used by European doctors in the past to draw bl