 The result is a variety of Russellian monism known as Russellian panprotopsychism. Russellian panprotopsychism does not entail panpsychism. Perhaps only entities in a limited class (e.g., some states of some animals) have protophenomenal properties that are arranged in a consciousness-constituting structure. In that case, on Russellian panprotopsychism consciousness would occur only in those entities and not elsewhere. There are also hybrid varieties of Russellian monism, on which some quiddities are phenomenal and others are protophenomenal (Holman 2008).