Front Matter
pp 0
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Stratigraphy of the Green River Formation in the Bridger Basin, Wyoming
Textoris, Daniel A. pp 241-258
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Studies of the Gyponinae. 1, The Genus Marganana Delong (Homoptera: Cicadellidae)
DeLong, Dwight M.; Freytag, Paul H. pp 258-262
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Studies of the Gyponinae. 2, A New Genus--Zonana (Homoptera: Cicadellidae)
DeLong, Dwight M.; Freytag, Paul H. pp 262
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Ecological Population Expansion of the Introduced Crayfish, Orconectes Virilis
Schwartz, Frank J.; Rubelmann, Robert; Allison, James pp 266
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Cytogenetic Investigations of Artificial Helianthus Giganteus X H. Salicifolius Hybrids (Compositae)
Long, Robert W. pp 273-281
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Limitations for Daytime Detection of Stars Using the Intensifier Image Orthicon
Gebel, Radames K. H. pp 281-289
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Book Notices
pp 289-289
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Observations on the Behavior and Reconstitution of Chlorpromazine-Treated Planaria (Dugesia Tigrina)
Stokely, Paul S.; Grossi, Joseph C., Jr. pp 290-297
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The Shortleaf Pitch-Blister Moth, Petrova Houseri Miller
Miller, William E. pp 297-301
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Index to Volume 63
pp 302-304
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Back Matter
pp 999
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