THE HONEY-GUIDES 275 



ROUGEOT, P. -C. 



1950. Contribution k I'^tude des indicatorid^s de la for6t Gabonaise. 



L'Oiseau, vol. 20, No. 1, pp. 51-63. 



1951. Nouvelle observations sur le Melichneutes robustus Bates. L'Oiseau, 



vol. 21, No. 2, pp. 127-134. 

 Russell, E. S. 



1935. Valence and attention in animal behaviour. Acta Biotheoretica, vol, 

 1, pp. 91-99. 

 Salvadori, Adelardo Tommaso 



1901. Uccelli della Guinea Portoghese. Ann. Mus. Civ. Storia Nat. Genova, 

 ser. 2, vol. 20 (40), pp. 749-790. 

 Santos, Joao dos 



1609. Ethiopia oriental, 2 vols. 

 Sarasin, Paul 



1924. Der Brutparasitismus des Kuckucks und das Zahlenverhaltnis der 

 Geschlechter, 36 pp. 

 Sassi, Moriz, and Zimmer, Franz 



1941. BeitrSge zur Kenntniss der Vogelwelt des Songea-Distriktes mit 

 besonderer Berticksichtigung des Matengo-Hochlandes (D. O. A.). 

 Ann. Naturh. Mus. Wien, vol. 51, pp. 236-346. 



SCHAPERA, I., AND FaRRINGTON, B. 



1933. The early Cape Hottentots . . . , xv -f 309 pp., illus. 

 ScLATER, Phillip Lutley 



1870. Note on the systematic position of Indicator. Ibis, ser. 2, vol. 6, 

 pp. 176-180, 2 figs. 

 ScLATER, William Lutley 



1911. On the birds collected by Mr. Claude H. B. Grant at various localities 

 in South Africa. Ill, Ibis, ser. 9, vol. 5, pp. 695-741. 

 ScLATER, William Lutley, and Mackworth-Praed, Cyril Winthrop 



1919. A list of the birds of the Anglo-Egyptian Sudan. Ill, Ibis, ser. 11, 

 vol. 1, pp. 628-707, 1 pi. 

 ScLATER, William Lutley, and Moreau, Reginald Ernest 



1932. Taxonomic and field notes on some birds of northeastern Tanganyika 

 Territory. II. Ibis, ser. 13, vol. 2, pp. 656-683. 

 Seitz, A. 



1923. Der Mensch und die Insekten. Aus Natur und Mus., Senckenberg. 

 Naturf. Ges., vol. 53, pt. 1, pp. 16-36. 

 Serle, William 



1939. Field observations on some northern Nigerian birds. Ibis, ser. 14, 

 vol. 3, pp. 654-699. 

 1950a. Notes on the birds of south-western Nigeria. Ibis, vol. 92, pp. 84-94. 

 1950b. A contribution to the ornithology of the British Cameroons. Ibis, 

 vol. 92, pp. 344-376. 

 1954. A second contribution to the ornithology of the British Cameroons. 

 Ibis, vol. 96, pp. 47-80. 

 Seyffert, C. 



1930. Biene und Honig im Volksleben der Afrikaner . . . , 209 pp., illus. 

 Sharpe, Richard Bowdler 



1876. A revision of the family Indicatoridae. In Rowley, Ornithological 



miscellany, vol. 1, pt. 3, pp. 192-209, 1 pi. 

 1892. On the birds collected by Mr. F. J. Jackson, F. Z. S., during his recent 

 expedition to Uganda through the territory of the Imperial British 

 East-African Company, pt. 4. Ibis, ser. 6, vol. 4, pp. 299-322. 



