Vol. 33, No. 1 (March 1950)

Table of Contents

Literature Review Articles

Front Matter
Editors
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Six New Aphids from Pennsylvania
Pepper, J. O.
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3-15
Source of Early Aphid Infestations in Shade-Grown Tobacco
Chamberlin, F. S.
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16-17
Research Request
Editors
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17
Biological Notes on Anagyrus Antoninae Timberlake (Hymenoptera-Encyrtidae) and its Host Antonina Graminis (Maskell) (Homoptera-Coccidae)
Riherd, Paul T.
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18-22
The Aquatic and Semiaquatic Hemiptera of Northern Florida. Part 1: Gerridae
Herring, Jon L.
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23-32
Nymphs of Three Species of Gomphus. (Odonata)
Westfall, Minter J., Jr.
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33-39
Back Matter
Editors
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