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 
.1, Shelter tubes of Nasutitermes columbicus on avocado tree, Frijoles, C. '/.. /■'. Pari of 
nest structure of a termitariurn of Eutermes debilis in crotch of tree on Taboga Island, R. P. 
C, One volume of LaSalle University law books, badly d imaged by termites, <>n shelf in 
i. Three volumes were attacked. The damage seems to have been done in one week's 
time. D, Shelter tubes of an anl similar to those constructed by termites. Photographs 
bj Zetek. 
