Smithsonian Report, 1955. — Schneirla 



PLATE 1 



1. A typical cylindrical bivouac of Eciton hamatum (colony '46 H-D) hanging from a log to 

 the ground. This bivouac appears as it was found, except for some clearing away of vines 

 and rubble around the cluster for the photograph. 



2. L'l'-JocLip I'l a sni.ill I'wiiion ()1 chist./r wall in a bivouac - , ;' hanuitum. Note that 



most of the ants hang head downward, a feature due to the placement of their tarsal leg 

 hooks. 



