PLATE III 



George Elwood Jenks 



Female bolas spider, Mastophora cornigera, with recently emerged brood, 

 including some adult males 



Walker Van Riper 



A symmetrical orb web of a mountain 

 orb weaver, Aranea aculeata 



Walker Van Riper 



Meshed web of Dictyna 

 on dried weed 



