CONTENTS 



CHAPTER PACE 



Introduction xiii 



I. Spiders and Their Relatives 3 



1. The zoological position of the Arachnida . . 3 



11. The characters of the Arachnida .... 9 



in. The orders of the Arachnida 12 



II. The External Characters of Spiders .... 95 



The external anatomy of spiders .... 95 



III. The Internal Anatomy of Spiders 137 



IV. The Life of Spiders 177 



1. Methods of study 177 



11. The development of spiders 182 



in. The food of spiders 185 



iv. Means by which spiders obtain their prey . 186 



v. The silk of spiders 187 



vi. The types of webs of spiders 193 



vii. The building of an orb web 196 



viii. The nests of spiders 206 



ix. The pairing of spiders 207 



x. The motherhood of spiders 208 



xi. The venom of spiders 213 



xii. The aeronautic spiders 21 i 



V. The Order Araneida or Spiders 218 



VI. The Superfamily Avicularioidea or Tarantulas 22X 



VII. The Superfamily Argiopcidea or True Spiders . 2^7 



XI 



