Vlll 



List of Illustrations. 



26. 



27. 

 28. 

 29. 



3°- 

 3 1 - 



y- 



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38. 

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Web of Linyphia Communis .... 



Pholcus swinging 



Round Web of Epeira Vulgaris 



Web of Zilla 



Web of Nephila Plumipes. From Wilder 



Part of Web of Nephila, to show the smooth 



threads. From Wilder. 



Epeira Spinea 



Spinnerets of Amaurobius .... 

 Calamistrum of Amaurobius .... 

 Uictyna spinning Curled Web .... 

 Part of Web of Amaurobius ; 



Part of Web of Dictyna, showing regular arrange 



ment of threads 



Unfinished Web of Triangle Spider. From Wilder 

 Finished Web of Triangle Spider, and Spider hold 



ing the Web. From Wilder 



Young Lycosa flying 



Flying Spider with a Thread attached to the Ground 

 Large Attus flying by a Brush of Threads 



pes. From Wilder, 



Male and Female Nephila Plumi 

 in Proceedings Boston Society Natural History 

 45. Heads of Males of Several Species of Erigone 

 Palpal Organ of Mygale . 

 Palpal Organ of Epeira . 

 Palpal Organ of Theridion 

 Epigynum of Epeira Riparia 

 Epigynum of Theridion 

 Epigynum of Theridion 

 Copulation of Lycosa 

 Copulation of Linyphia 

 Copulation of Agalena 

 Copulation of Epeira Riparia 

 Drassus laying Eggs . 

 Lycosa carrying Cocoon attached to her Spinnerets 

 Attus Mystaceus laying Eggs 

 Epeira Strix making Cocoon .... 



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