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CONTEN ES 
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Volume XXVIII 
Papers published June 1, 1933 to December 31, 1934 
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Chas. E. Burt and Mary Danheim Burt—A_ Preliminary 
Check List of the Lizards of South America 1 
Stuart L. O’Byrne—An Aurora Observed in Missouri and 
Its Connection with Solar Activity 
Darling K. Greger--Bibhiogcaphic Index of North American 
Species of the Eublast 
Dorothy A. Boyer and Albert A. Heinze—An Annotatel List 
of the Amphibians and Reptiles of Jefferson County, 
Missouri 185 
Phil Rau—Notes on the Behavior of Certain Ants of 
St. Louis County, Mo 207 
Phil Rau—Notes on the Behavior of Certain Solitary and 
Social Bees 219 
Harold I. O’Byrne—Observations on the Life History of 
the “Baltimore Checker-spot” Butterfly, Euphydryas 
‘phaéton 227 
Ralph Voris—Biologic oe on the Staphylinidae 
(Coleoptera ) 233 
