314 



ANNUAL REPORT SMITHSONIAN INSTITUTION, 1911. 



Bahia, and runs west 376 kilometers into the State of Minas Geraes, 

 ant hills are big and abundant. The newer ones are steeply conical, 

 but with age they become more or less rounded and flattened. In 



the vicinity of Urucu Station (kilometer 226) the mounds are so thick 

 and so close together that the country looks like a field of gigantic 

 potato hills. 



