WALKING-STICKS AND WALKING-LEAVES. 47 



the different kinds of Tropidoderns and Podacanthus, 

 bulkier still, and shorter, have greater facility of move- 



FlG. 12. — Tropidoderns rliodonius. 



ment ; but the large wings are employed rather momen- 

 tarily than for anything properly called flight, merely 

 as assistance in leaping to a safer place, rather than for 

 transport to long distances. 



