“…Toddia, found in frogs (Johnston, 1975) and snakes (Marquardt and Yaeger, 1967;Sousa et al, 1973), clearly differs from the Pirhemocyton-like erythrocytic viral infec tions of lizards, by the presence of a crystalloid body, also demonstrable ultrastructurally (Sousa and Weigl, 1976;Alves de Matos and Paperna, 1990). In lizard infections, the presence of a vacuole (= albuminoid body), during at least part of the viral infection process, or its total absence, corresponded vith distinct groups of hosts namely: vacuoles were present in all gecko infections, and absent in infections of agamids and skinks.…”