Front Matter
p. 0
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Limnological Studies of Western Lake Erie. 1, Plankton and Certain Physical-Chemical Data of the Bass Islands Region, from September, 1938, to November, 1939
Chandler, David C. pp. 291-336
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Total Distribution of Taste Buds on the Tongue of the Pup
Holliday, John C. pp. 337-344
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On the Biology of Drosophila Immigrans Sturtevant with Special Reference to the Genetic Structure of Populations
Spencer, Warren P. pp. 345-361
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Two New Buprestidae
Knull, Josef N. pp. 362-363
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Book Notices
p. 363
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Index to Volume XL
p. 369
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Back Matter
p. 999
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