182 U.S. NATIONAL MUSEUM BULLETIN 223 



Snow, D. W. 



1950. The birds of Sao Tome and Principe in the Gulf of Guinea. Ibis, 

 vol. 92, pp. 579-595. 



SOUSA, Jos£ AUGXJSTO DE 



1886. Lista das aves colligidas em Africa de 1884 a 1885 pelos Srs. Capello 

 e Ivens. Journ. Sci. Math. Fysicas e Naturaes, Lisbon, vol. 11, 

 pp. 76-81. 



Southern, H. N. 



1954. Mimicry in cuckoos' eggs, in Evolution as a process, ed. J. Huxley, 

 A. C. Hardy, and E. B. Ford, pp. 219-232. 



Sparrow, Richard 



1936. Exhibition of eggs of South African parasitic birds. Bull. British 



Ool. Assoc, vol. 5, pp. 5-7. 



Stallcup, William B. 



1954. Myology and serology of the avian family Fringillidae. A taxonomic 



study, Univ. Kansas Publ., Mus. Nat. Hist., vol. 8, pp. 157-211, 

 23 figs., 4 tables. 



Stark, Arthur C. 



1900. The birds of South Africa, vol. 1, London, R. H. Porter. 322 pp., 

 81 text figs. 



Stefani, Hans 



1931. Der Atlasfink mit verlangerten Schwanzfedern. Gefiederte Welt, 

 vol. 60, pp. 544-545. 



Steinbacher, Joachim, and Wolters, H. E. 



1952. Vogel in Kafig und VoHere, pt. 1, Die Prachtfinken, 12 pp. 



Steiner, H. 



1955. Das Brutverhalten der Prachtfinken, Spermestidae, als Ausdruck 



ihres selbstandingen Familiencharakters. Acta XI Congr. Int. 

 Ornith., 1954, pp. 350-355. 



Steinmetz, H, 



1937. Brut und Zuchtbericht aus dem Zoologischen Garten Berlin 1936. 



Gefiederte Welt, vol. 66, pp. 352-354. 



Stevenson-Hamilton, James 



1947. Wild life in South Africa, London, Cassell, 364 pp. 



Stone, Witmer 



1936. Zoological results of the George Vanderbilt African expedition of 

 1934. VI. Birds. Proc. Acad. Nat. Sci. Philadelphia, vol. 88, pp. 

 529-598. 



Stoneham, Hugh Frederic 



1929. Field notes on a collection of birds from Uganda, III. Ibis, ser. 12, 

 vol. 5, pp. 267-292. 



Stresemann, Erwin 



1925. Zum Brutparasitismus der Dominikanerwitwe (Vidua serena). 



Ornith. Monatsb., vol. 33, p. 128. 

 1927-1934. Aves — Vogel, in Kuckenthal und Krumbach, Handbuch der 

 Zoologie, vol. 7, Berlin und Leipzig, Walter de Gruyter, 899 pp., 

 944 figs. 



