E.  Calabresi, ?Anfibi e rettili raccolti nella Somalia dai Proff. G. Stefanini e N. Puccioni (Gennaio-Luglio 1924).?, Atti della Societa Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano, vol. 66, pp. 14-60, 1927.

W.  Rose and Hewitt, J., ?Description of a new species of Xenopus from the Cape Peninsula.?, Transactions of the Royal Society of South Africa, vol. 14, pp. 343-346, 1927.

J.  Hewitt, ?Further descriptions of reptiles and batrachians from South Africa.?, Record of the Albany Museum. Grahamstown, vol. 3, pp. 371-415, 1927.

J. H.  Power, ?On the herpetological fauna of the Lobatsi-Linokana area.?, Transactions of the Royal Society of South Africa, vol. 14, pp. 405-422, 1927.

T.  Barbour and Loveridge, A., ?Some undescribed frogs and a new gecko from Liberia?, Proceedings of the New England Zoological Club, vol. 10, pp. 13-18, 1927.