An unusual strain of Nocardia, designated VH/CN-71, was isolated from a pouch-like growth in the inguinal region of a young cat. Although this organism resembles Nocardia brasiliensis in a number of its physiological activities, it appears to be more closely related to a nocardioform organism previously classified by Krasil'nikov (1941) as Proactinomyces mesentericus (Orla-Jensen) Jensen 1932.