492 University of California Publications in Zoology [Vol. 12 



Gray, J. E. 



1869. On the white-toothed American beaver. Ann. Mag. Nat. Hist., 

 series 4, 4, p. 293. 



Gregory, W. K. 



1910. The orders of mammals. Bull. Amer. Mus. Nat. Hist., 27, 

 1-524, 32 figs, in text. 



Grixnell, J. 



1913a. The species of the mammalian genus Sorex of west-central 



California with a note on the vertebrate palustrine faunas 



of the region. Univ. Calif. Publ. Zool., 10, 179-195, 6 figs, in 



text. 

 1913b. A distributional list of the mammals of California. Proc. Calif. 



Acad. Sci., series 4, 3, 1913, 265-390, pis. 15, 16. 

 1914. An account of the mammals and birds of the lower Colorado 



valley with especial reference to the distributional problems 



presented. Univ. Calif. Publ. Zool., 12, 51-294, pis. 3-13, 9 



figs, in text. 



Grinnell, J., and Swarth, H. S. 



1913. An account of the birds and mammals of the San Jacinto area 

 of southern California. Univ. Calif. Publ. Zool., 10, 197-406, 

 pis. 6-10, 3 figs, in text. 



Gulick, J. T. 



1905. Evolution, racial and habitudinal. Carnegie Inst. Wash., publ. 

 no. 25, xii + 270. 



Heller, E. 



1909. "The mammals" in Birds and mammals of the 1907 Alexander 

 expedition to southeastern Alaska. Univ. Calif. Publ. Zool., 5, 

 245-264, pi. 26, text figs. 3 and 4. 



Hollister, N. 



1913. A synopsis of the American minks. Proc. U. S. Nat. Mus., 44, 



471-480. 



1914. A systematic account of the grasshopper mice. Proc. U. S. Nat 



Mus., 47, 427-489, with pi. 15. 



Holmes, S. J. 



1909. The categories of variation. Amer. Nat, 43, 257-285. 



Hopkins, A. C. 



1914. Parallelism in morphological characters and physiological char 

 acteristics in Scolytoid beetles. Science, n.s., 39, 187-188 

 (report of paper read before Biological Society of Washing 

 ton). 

 Howell, A. H. 



1901. Revision of the skunks of the genus Chincha. U. S. Dept 

 Agric, Div. Biol. Surv., N. Amer. Fauna, 20, 1-47, pis. i-viii. 

 Jeffrey", E. C. 



1914. The mutation myth. Science, n.s., 39, 488-491. 

 Jordan, D. S. 



1905. The origin of species through isolation. Science, n.s., 22, 545-562. 

 1908. The law of geminate species. Amer. Nat., 42, 73-80. 



