Bui. 1232, U. S. Dept. of Agriculture. 



Plate X. 



Shelter Tunnels and Nest Structures and Damage by Termites, 

 also the Termitelike Shelter Tunnels of an Ant = 



A, Shelter tubes of Nasutitermes columbicus on avocado tree, Fri.ioles, C. Z. B, Part of 

 nest structure of a termitarium of Eutermes debilis in crotch of tree on Taboga Island, R. P. 

 C, One volume of LaSalle University law books, badly damaged by termites, on shelf in 

 room. Three volumes were attacked. The damage seems to have been done in one week's 

 time. D, Shelter tubes of an ant similar to those constructed bv termites. Photographs 

 by Zetek. 



