1912] 



Mann — Note on a Guest of Eciton Hamatum 



99 



accompanied by numerous species of guests, but these guests are 

 numerous in individuals. 



The first Mimopria was found with the large army mentioned 

 above. It was running along the column in a manner exceedingly 

 ant-like, a good mimic of the small worker form, but darker in 

 color. After an interval of several minutes another followed. 

 This for some reason stopped. It was immediately surrounded 

 by Ecitons feeling of it with their antennte. Then one, a medium 



Fig. 1. Eciton hamafnm Fabr. (small worker), and guest, Mimopria ecito- 

 nophila Holm. 



sized worker, seized it by the thorax and resumed the march with 

 the Mimopria extending backward beneath its body. It seemed 

 possible that the Proctotrupid had been taken as prey, but when 

 placed in the collecting bottle it was seen to be uninjured. Many 

 of the Ecitons were carrying objects, generally dead insects and 

 ant pupse, and by watching the column in profile, I found two 

 more Mimoprias that were being carried in the same manner. 



Later, at another camp further up the river, I found another 

 specimen with an army of the same ant species. From these 



