The RW Aurigae stars form a class of variables that has recently been recognized, notably through the work of C. Hoffmeister. Members are assigned to this class solely on the basis of their type of light variation; specifically, through the possession of rapid, non-periodic fluctuations in brightness. The spectral type and luminosity play no part in the classification. Since the prototype, RW Aurigae, is itself a 't Tauri star', some misunderstanding has arisen as to the relationship between the RW Aurigae variables on one hand, and the T Tauri stars on the other. It is important to note that assignment to the T Tauri class is based entirely upon spectral criteria, in particular, the possession of a characteristic emission-line spectrum; the nature of the light variation (because the great majority, if not all, of the T Tauri stars are variable) is not considered in making the assignment.