Recognition of anomalies of the ureter has become common with increase in frequency of the cystoscopic and roentgenographic study of patients. The precision with which the entire urogenital system may be brought before one's eyes has clarified many otherwise obscure pathologic conditions. The advent of iopax (sodium 2-oxo-5-iodo-pyridine-N-acetate, introduced as "Uroselectan") as an additional means of studying the function as well as the contour of the urinary tract is another distinct step forward. LITERATURE Before it was possible to study the urinary tract completely, the only reference to ureteral anomalies was made from postmortem examinations. In searching the literature carefully we have been able to find reference to only seven cases that were supposed to present three or more ureters on one side, and in each of these there