The tectorial membrane and otolithic membrane of pigeon inner ear were observed by scanning electron microscopy. Special attention was paid to the possible connection of sensory cells to the membranes.1. Each hair bundle of the sensory cells of the cochlea was enclosed in a cavity on the under side of the tectorial membrane, the longest hairs being attached directly to the cavity rim. A fine fibrillar structure on the supporting cells of the cochlea was directly connected to the cavity rim of the tectorial membrane.2. Each sensory hair bundle of the vestibular maculae was surrounded by fine fibrils and projected upwards into a cavity on the lower surface of the otolithic membrane. A connection between the hair tips and the otolithic membrane could not be evidenced, though both elements were supposed to be in contact with each other through the fibrillar structures on the supporting cells of the vestibular maculae.