Heatwole, H. and P. J. Suarez-Lazu. Supernumerary legs in Bufo marinus and abnormal regeneration of the tail in Ameiva exsul. Heatwole, H., H. Solano de Chacin and A. Heatwole. Notes on amphibians from the Venezuelan Guayanas with description of two new forms. Sexton, O. J. and H. Heatwole.
Life history notes on some Panamanian snakes.
Ortleb, E. and H. Heatwole. Comments of some Panamanian lizards with a key to the species from Barro Colorado Island, C. Z. and vicinity. The reprints are bound into volumes of 5-year lots and theses and books appear as individual volumes in the series. The forest floor and its utilization by selected species of terrestrial amphibians. Collected Works of Harold Heatwole, 1960-1965.