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McCoid, M. J. (1985). An observation of reproductive behavior in a wild population of African clawed frogs, Xenopus laevis, in California. California Fish and Game. 245-250.

Lamotte, M. (1959). Observations écologiques sur les populations naturelles de Nectophrynoides occidentalis (Fam. Bufonidés). Bulletin Biologique de la France et de la Belgique. 93, 24-413.

Coe, M. J. (1974). Observations on the ecology and breeding biology of the genus Chiromantis. . Journal of Zoology. London. 13-34.

Hirji, K. N., & Nikundiwe A. M. (1982). Observations on the Esophageal Glands in Some Tanzanian Anurans. South African Journal of Zoology. 17, 32-34.

Channing, A. (1993). Observations on the natural history of Stephopaedes anotis (Bufonidae). Journal of Herpetology. 27, 213-214.

Barbault, R., & Trefaut Rodrigues T. (1979). Observations sur la reproduction et la dynamique de spopulations de quelques anoures tropiceaux IV. Phrynobatrachus accraensis. Bull . Inst. Fond . Afr. Noire , Ser. A. 41, 417-428.

Paulian, R., & Vilardebo A. (1946). Observations sur le regime alimentaire des batraciens en basse Cote d'Ivoire. Bull. Soc. Zool. France. 71, 129-132.

Poynton, J. C., & Haacke W. D. (1993). On a collection of amphibians from Angola, including a new species of Bufo Laurenti. Annals of the Transvaal Museum. 36, 9-16.

Boulenger, G. A. (1905). On a collection of batrachians and reptiles made in South Africa by Mr. C. H. B. Grant, and presented to the British Museum by Mr. C. D. Rudd.. Proceedings of the Zoological Society of London . 1905, 248-255.

Loveridge, A. (1938). On a collection of reptiles and amphibians from Liberia. Proceedings of the New England Zoölogical Club. XVII, 49-74.

Schilthuis, L. (1889). On a small collection of Amphibia from the Congo with description of a new species.. Tijdschrift der Nederlandsche Dierkundige Vereeniging. Serie 2, . 2, 285-286.

Loveridge, A. (1955). On Amphibia Salientia from Ivory Coast. Revue Suisse de Zoologie. 62, 129-150.

Hewitt, J. (1933). On new and rare frogs from Chirinda Forest.. Occasional Papers of the National Museum of Southern Rhodesia. 6(12),

Bush, S. F. (1952). On Rana umbraculata, a new frog from South Africa.. Annals of the Natal Museum . 12(2), 153-164, pls 3-6.

Loveridge, A. (1951). On reptiles and amphibians from Tanganyika Territory collected by C.J.P. Ionides. Bulletin of the Museum of Comparative Zoology. 106(4), 177-204.

Stejneger, Leonhard Hess (1894). On some collections of reptiles and batrachians from East Africa and the adjacent islands, recently received from Dr. W.L. Abbott and Mr. William Astor Chanler, with descriptions of new species,.

Lanza, B. (1978). On some new or interesting East African amphibians and reptiles.. Monitore Zoologico Italiano. Nuova Serie, Supplemento. Firenze. 10, 229-297.

Hewitt, J. (1925). On some new species of reptiles and amphibians from South Africa.. Record of the Albany Museum. Grahamstown. 3, 343-368.

Cope, E. D. (1867). On the families of the raniform Anura. Journal of the Academy of Natural Sciences of Philadelphia. Series 2, 6, 189-206.

Kukenthal, W. (1912). On the hair-like appendages in the frog Astylosternus robustus (Blgr). Bulletin of the Museum of Comparative Zoology. 53(9), 371-377.

Download: Kükenthal_1912.pdf (1.92 MB)

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

Procter, J. B. (1919). On the Skull and Affinities of Rana subsigillata A. Dum.. Proc. Zool. Soc. London. 1919,

Boycott, R. C. (1982). On the taxonomic status of Heleophryne regis Hewitt, 1909 (Anura: Leptodactylidae). Annals of the Cape Provincial Museums (Natural History). 14(3), 89-108.

Boulenger, E. G. (1915). On two new tree-frogs from Sierra Leone, recently living in the Societys Gardens.. Proceedings of the Zoological Society of London . 1915(243),

Blackburn, D. C., & Moreau C. S. (2006). Ontogenetic diet change in the arthroleptid frog Schoutedenella xenodactyloides. Journal of Herpetology. 40, 388-394. Abstract