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



Plate VI. 



Damage to Lead-Covered Cables, by the Termite Coptotermes Niger. 



A, Tape, rubber, and paper insulation perforated; near Cristobal. B, F, Damage to wood 

 form under concrete wall cover to tunnel through which cables run at Miraflores Locks. 

 C, Damage to lead cable and insulation on this tunnel. D, Galleries of C. niger in trunk of coco- 

 nut palm at Ancon, C. Z. E, Swarm of colonizing sexual adults of C. niger, showing workers 

 and soldiers; from central wall, central tower, Miraflores Locks. G, Shelter tubes of C. niger 

 On avocado tree at Frijoles, C. Z. 



