Page:Insects - Their Ways and Means of Living.djvu/20

 Sound-making organs and ears of a conehead katydid Auditory organ of a katydid  A bush katydid  The oblong-winged katydid  The angular-winged katydid  The true katydid  The katydid in various attitudes  Sound-making organs of the katydid </li> <li>A conehead katydid </li> <li>The robust katydid </li> <li>The common meadow katydid </li> <li>The handsome meadow katydid </li> <li>The slender meadow katydid </li> <li>The Coulee cricket </li> <li>Wings of a tree cricket </li> <li>A mole cricket </li> <li>The striped ground cricket </li> <li>The common black cricket </li> <li>The snowy tree cricket </li> <li>Antennal marks of the tree crickets </li> <li>The narrow-winged tree cricket </li> <li>A broad-winged tree cricket </li> <li>Back glands of a tree cricket </li> <li>The jumping bush cricket </li> <li>The common walking-stick insect </li> <li>A gigantic walking-stick insect </li> <li>A leaf insect </li> <li>The praying mantis </li> <li>A shield-bearing mantis</li> <li>Egg case ofa mantis </li> <li>Common household roaches</li> <li>Egg cases of roaches </li> <li>Young of the Croton bug</li> <li>The house centipede </li> <li>Wings of a cockroach </li> <li>A Paleozoic forest </li> <li>Fossil roaches </li> <li>Early fossil insects</li> <li>Machilis </li> <li>Dragonflies </li> <li>A young dragonfly </li> <li>A mayfly </li> <li>A young mayfly </li> <li>The relation of the germ cells and body cells </li> <li>External structure of an insect</li> <li>Leg of a young grasshopper</li> <li>Legs of a honeybee </li> </ol>