148 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Pearson, K. 

 1896. Mathematical Contributions to the Theory of Evolution. — III. 

 Regression, Heredity, and Panmixia. Phil. Trans. Roy. Soc, 

 187 A. 253-318. 

 Redecke, H. C. 



1902. Variationsstatistische Untersuchungen ueber Fischrassen. Zool. 

 Centralbl., IX. 615-670. 

 Tryon, G. W., Jr. 



1882. Structural and Systematic Conchology : an Introduction to the 

 Study of the Mollusca. Philadelphia, 1882. 

 Warren, E. 



1896. Variation in Portunus depurator. Proc. Roy. Soc. Lond., LX. 

 221-243. 

 "Warren, E. 



1898. An Investigation on the Variability of the Human Skeleton ; with 

 Special Reference to the Naquada Race discovered by Professor 

 Flinders Petrie in his Explorations in Egypt. Phil. Trans. Roy. 

 Soc. Lond., 189 B. 135-227. PI. 22. 

 Weldon, W. P. R. 

 1892. Certain Correlated Variations in Crangon vulgaris. Proc. Roy. 

 Soc, LI. 2-21. 

 Williamson, H. C. 



1900. On the Mackerel of the East and West Coasts of Scotland. 

 Eighteenth Annual Report of the Fishery Board for Scotland. 

 Pt. III. 291-329. 



Yerkes, R. M. 



1901. A Study of Variation in the Fiddler Crab, Gelasimus pugilator. 

 Proc. Amer. Acad. Arts and Sciences, XXXVI. 417-442. 



