Products of cytidine catabolism by resting cells of Staphylococcus intermedius, Staphylococcus xylosus, Staphylococcus epidermidis, and Staphylococcus saprophyticus were chromatographically separated. Under the assay conditions utilized, cytidine was ultimately converted to uracil by the common route in which cytidine was first deaminated to uridine, as well as ammonia, and uridine was cleaved to yield uracil.