Reptiles of British India, Ray Society, 1864.
P. Ac. Philad. 1864, p. 230.
Catalogue of Snakes, British Museum, London, 1893-1896.
Except Oligodon, Dasypeltis and Atractaspis (see. p. [582]), in which palatal teeth are restricted to the palatines.
Atlas der Thierverbreitung, pt. v. Gotha, 1887.