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412 Appendix 2
1939
1939a The sex ratio in wild birds. The American Naturalist 73:156–179
1939b Die Grössenvariation von Lanius schach hainanus. Ornithologische Monatsberichte
47:63–64
1939c Zoological results of the Denison-Crockett Expedition to the South Pacific for the
Academy of Natural Sciences of Philadelphia, 1937–1938. Part I.- The birds of the
island of Biak [with R. Meyer de Achauensee]. Proceedings of the Academy of Natural
Sciences of Philadelphia 91:1–37
1939d Ein neuer Wespenbussard von den Philippinen. Ornithologische Monatsberichte
47:74–76
1939e The winter quarters of Chalcites malayanus minutillus (Gould). The Emu 39:128–129
1939f Zoological results of the Denison-Crockett South Pacific Expedition for the Academy
of Natural Sciences of Philadelphia, 1937–1938. Part IV.- Birds from northwest New
Guinea [with R. Meyer de Schauensee]. Proceedings of the Academy of Natural
Sciences of Philadelphia 91:97–144
1939g Zoological results of the Denison-Crockett South Pacific Expedition for the Academy
of Natural Sciences of Philadelphia, 1937–1938. Part V.- Birds from the western
Papuan Islands [with R. Meyer de Schauensee]. Proceedings of the Academy of
Natural Sciences of Philadelphia 91:145–163
1940
1940a Birds collected during the Whitney South Sea Expedition. XLI. Notes on New Guinea
birds. VI. American Museum Novitates, no. 1056:1–12
1940b Birds collected during the Whitney South Sea Expedition. XLII. On the birds of the
Loyalty Islands. American Museum Novitates, no. 1057:1–3
1940c Speciation phenomena in birds. American Naturalist 74:249–278 [Reprinted in part
(pages 250–256) under the title “Toward a modern species definition” in E. Mayr,
Evolution and the Diversity of Life, pages 481–484, 1976]
1940d Notes on Australian birds. I. The genus Lalage. The Emu 40:111–117
1940e Pericrocotus brevirostris and its double. The Ibis: 712–722
1940f The Vernay-Cutting Expedition to Northern Burma.- Part I [with J.K. Stanford].
The Ibis: 679–711
1940g Birds collected during the Whitney South Sea Expedition. XLIII. Notes on New
Guinea birds. VII. American Museum Novitates, no. 1091:1–3
1940h Borders and subdivision of the Polynesian region as based on our knowledge of
the distribution of birds. Pages 191–195 in Proceedings of the Sixth Pacific Science
Congress, vol. 4
1940i The origin and the history of the bird fauna of Polynesia. Pages 197–216 in Proceedings
of the Sixth Pacific Science Congress, vol. 4 [Reprinted in E. Mayr, Evolution
and the Diversity of Life, pages 601–617, 1976]
1941
1941a The Vernay-Cutting Expedition to Northern Burma.- Part II, III, IV, and V [with
J.K. Stanford]. The Ibis series 14, vol. 5:56–105, 213–245, 353–378, and 479–518
1941b Taxonomic notes on the birds of Lord Howe Island. The Emu 40:321–322
1941c Wanderung oder Ausbreitung? Zoogeographica 4:18–20
1941d A new race of Coracina caledonica [with S.D. Ripley]. The Auk 58:250