INDEX. 



Abdomen, 12, 16. 



Adhesive threads, 67. 



Adult characters of spiders, 87. 



Agalena, web of, 55. 



Agalenidse, 26. 



Age of spiders, 112. 



Air-sacs, 22. 



Air-tubes, 12. 



Anyphena, flying of, 84. 



Argiope, web of, 67. 



Argyrodes, 58. 



Attidae, 28. 



Attus, flying of, 85. 



Bertkau, experiments on poison of 

 spiders, 34. 



Blackwall, age of spiders, 112; ex- 

 periments on poison, 35; on blow- 

 ing out of threads, 80; on flying 

 spiders, 82. 



Blind spiders, 113. 



Blowing of threads, 80. 



Breathing-organs, 16, 22. 



Calamistrum, 73. 



California trap-door spider, 49. 



Care of young, 104. 



Cave spiders, 113. 



Cintflonidas, 72. 



Classification of spiders, n, 23. 



Claws, 14. 



Cobwebs, 54. 



Cocoons, 98. 



Colors of spiders, 17, 19. 



Concealment of spiders, 70. 



Copulation, 94. 



Crab spiders, 29. 



Cribellum, 72. 



Curled webs, 72. 



Darwin on flying spiders, 83. 



Dictyna, spinning of, 73; regular 



webs of, 74. 



Distribution of spiders, 113. 

 Doleschall, experiments on poison of 



spiders, 34. 



Dolomedes, nest for young, 53. 

 Dorsal groove, 17 

 Drassidiae, 26. 



Eggs, laying, 98 ; growth of, 103. 

 Embryo spiders, 105. 

 Epeiridx, 31. 

 Epigynum, 92. 

 Erigone, heads of male, 88. 

 Eyes, 17. 

 Feet, 14. 



Flying of spiders, 79. 

 Food of trap-door spiders, 50. 

 Growth of spiders, 86. 

 Habitats of spiders, 113. 

 Hatching, 107. 

 Heads of male spiders, 88. 

 Heart, 21. 



Hoisting captured insects, 60. 

 Holes, 44. 

 House spiders, 114. 

 Intestine, 21. 

 Jumping spiders, 28. 

 Laying eggs, 98. 



117 



