A considerable number of otherwise normal elliptical galaxies show sharp edged, low surface brightness concentric features, often at very large radii from the parent galaxy. Features like this are visible in some of the photographs presented by Arp (1966). More recently extensive lists of galaxies with such features have been prepared from searches of sky survey material by Malin and Carter (1980, 1983) and Schweizer (1983), and the implications of these features for models of ellipticals and for peoples ideas about their formation have been considered in detail.