Vol. II June 19, 1921 No. 12 



JOURNAL 



OF THB 



WASHINGTON ACADEMY 

 OF SCIENCES 



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 Robert B. Sosman S. F. Blakb Sidney Paios 



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H. V. Harlan F. B. SilsbeS 



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N. HOLUSTBR G. W. Stosb 



BIOLOGICAI. SOCISTV OBOI,OOICAL SOCIETY 



S. A. ROHWER J. R. SWANTON 



BNTOMOI.OOICAI. SOCIBTT AMTHSOPOLOOICAL SOCIETY 



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