ENEMIES AND TllKlK INFLUENCE. 



41^ 



Fig. 350. 



Fig. 351. 





Fig. 349. Section view of curved burrow of Stothis astuta, showing double trapdoor entrance. 

 Fn.;. 350. The globular burrow, with trapdoor of Stothis cenobita. (Section view.) Fig. 351. 

 Front view of trapdoor. (Natural size.) 



