ANIMAL BEHAVIOR, WITH EXAMPLES 



207 



The completed nest of the Jug-making Wasp (Eiimenes fra- 

 terniis). As many as three mud nests are sometimes sad- 

 dled on a twig. In each jug green caterpillars are stored 

 as Jood for the grnh that hatches from the egg the 

 wasp deposits before finally sealing the opeitirtg. 



