↑ Boulenger, G.A. Catalogue of the Snakes in the British Museum (Natural History), Volume I. Containing the Families...Colubridæ Aglyphæ, Part. Trustees of the British Museum (Natural History). (Taylor and Francis, printers.) London. xiii + 448 pp. + Plates I.- XXVIII. (Simocephalus capensis, p. 345.)
