EIVTOIVIOLOGJ^^ST for BEGMINlVEJb^S 





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THE AMERICAN NATURALIST 



Was commenced twenty-two years ago, by an association of the sudents of Professor 

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Prof. W. S. Bayley, of the University of Wisconsin, has charge of Mineralogy. 



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Prof. J- A. Ryder, of the University of Pennsylvania, edits the department of Embry- 

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It has been the aim of the Naturalist to preserve its well-known national character, 

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Synopsis of the Families and Genera of North American Diptera (exclusive of 

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BUTTEPtFLIES OF IVOXiTH AlMEPftlOA. 



Part 6, Vol. iii, issued 1st Jan., 1889. Contents: Papilio Nitra ; Anthocharis 

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