The book Zoology for High Schools And Colleges was written by author A S Alpheus Spring Packard Here you can read free online of Zoology for High Schools And Colleges book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Zoology for High Schools And Colleges a good or bad book?
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Though producing sickness, pain, and swelling in the arm, the sting of the scorpion is seldom fatal. The little false-scorpions (Chelifer, Fig. 314) often occur in books, under the bark of tre^s, and under stones. The whip- scorpion is confined to warm countries. Tlielyplionus gigan- teus Lucas occurs in New Mexico and Mexico. Its abdomen ends in a long lash-like appendage. Its bite is poisonous. The harvest-men, or daddy-l®ng-legs, are common in dark places about houses. They feed on plant-lic...e. Our common species is Plialangium dorsatum Say. Order 6. Araneina. — The spiders are always recogniza- ble by their spherical abdomen, attached by a slender pedicel to the head-thorax. They breathe, like the scorpions, both by lungs as well as by tracheaa, and the young resemble the parent in having four pairs of feet. The development of the spider has some peculiarities not found in the higher insects. The egg undergoes total seg- mentation. The germ is somewhat worm-like, as in Fig. 315, then, as in G, the primitive band forms, with head and tail end much alike.
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