392 University of California Publications in Zoology [Vol. 16 



Parker, G. H. 



1902. The reactions of copepods to various stimuli and the bearing of this 

 on daily depth migrations. Bull. U. S. Fish. Comm., 21, 103-123. 



RiTTER, Wm. E. 



1916. The place of description, definition and classification in philosophical 

 biology. Scientific Monthly, 3, 45.5^70. 



Shelpord, Victor E. 



1911. Physiological animal geography. Journ. Morph., 22, 5.51-618. 



1912. Ecological succession, V: Aspects of physiological classification. Biol. 



BuU., 23, 331-370. 



1914. An experimental study of the behavior agreement among the animals 



of an animal community. Ibid., 26, 294-315. 



1915. Principles and problems of ecology as illustrated by animals. Journ. 



of Ecol., 3, 1-23. 



Steuer, Adolf. 



1915. Revision der Gattung Acartia Dana. Zool. Anz., 45, 392-397, 5 figs. 



Walter, Herbert Eugene. 



1907. The reactions of planarians to light. Journ. Exp. Zool., 5, 37-162. 



