1909 Ruthven, A. G. Mich. Acad. Sci. nth Rept. p. 116. 



1 910 Ruthven, A. G. Rept. Mich. Acad. Sci. Vol. 12, p. 59. 



191 1 Ruthven, A. G. Mich. Geo!, and Biol. Survey Publ. 4. Biol. 

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191 1 Thompson, C. Mich. Acad. Sci. 13th Rept. 191 1, pp. 105- 

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1 91 2 Ruthven, A. G., C. Thompson and H. Thompson. Mich. 

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1916 Evans, A. T. Proc. U. S. Nat. Mus. Vol. 49, pp. 351-354. 



1917 Ellis, M. M. igth Ann* I Rept. Mich. Acad. Sci. 1917, 

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1920 Potter, D. Copeia, No. 82, pp. 89-91. 



1928 Blanchard, F. N. Copeia, No. 167, pp. 42-51. 



1929a Burt, C. E. and M. D. Burt (see Arkansas). 

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1922 Weed, A. C. Proc. Biol. Soc. Wash. Vol. 2S^ PP- 107-110. 

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1 910 Brimley, C. S. (see Alabama). 



1920 Potter, D. Copeia, No. 82, pp. 89-91. 

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 1932 Allen, yi. J. Am. Mus. Novitates, No. 542, pp. 1-20. 

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1893 Hurter, J. Trans. Acad. Sci. St. Louis, Vol. VI, pp. 251-261. 



1894 Test, F. C. Bull. U. S. Fish Commission. Vol. XII for 

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1897 Hurter, J. Trans. Acad. Sci. St. Louis, Vol. VII, p. 503. 

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1872 Cope, E. D. Prelim. Rept. of U. S. Geol. Survey of Montana 



and Adjacent Territories. By F. V. Hayden, pp. 467-476. 

 1874 Allen, J. A. Proc. Bost. Soc. Nat. Hist. Vol. 17, pp. 33-9 1 - 



1878 Coues, E. and H. C. Yarrow. Art. XI. Bull. U. S. Geol. 

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1879 Cope, E. D. Am. Naturalist. Vol. XIII, No. 7, pp. 432-441. 

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1857 Hallowell, E. Proc. Acad. Nat. Sci. Phila. Vol. VIII, pp. 



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 1 93 1 Burt, C. E. and M. D. Burt (see Kansas). 



211 



