128   THE AMERICAN NATURALIST 
 
Characters in Zoarces viviparus L.," Ibidem, 14, No. 15: 
1-24. 
1930. "Racial Investigations. X. The Atlantic Cod (Gadus eallarias 
L.) and Some Local Races of the Same," Ibidem, 18, No. 6: 
1-72, figs. 1-5, pls. 1-10. 
Schnakenbeek, W. 
1931. "Zum Rassenproblem bei Fischen," Zeitschr. Morph. und Oekol.

Tiere, 21 (3-4): 409-566, figs. 1-50. 
Schultz, Leonard P. 
1927. "Temperature-controlled   Variation  in  the  Golden   Shiner,

Notemigonus crysoleucas," Mich. Acad. Sci., Arts and Let- 
ters, 7, 1926, 417-432, figs. 16-17, pl. 28. 
Smith, Kirstine 
1921. "Statistical Investigations on Inheritance in Zoarces viviparus

L.," Phil. Trans. Boy. Soc. London. 
1922. "Continued Statistical Investigations with Zoarces viviparus 
L.," C.-R. Tray. Lab. Carlsberg, 14, No. 19: 1-42. 
Strubberg, A. 
1930. "The Herring (Clupea harengus L.). Average Numbers of 
Vertebrae," C.-R. Tray. Lab. Carlsberg, 18 (6): 61-68. 
Sumner, F. B. 
1924. "The Stability of Subspecific Characters under Changed Condi-

tions of Environment," Am. NAT., 58: 481-505. 
1926. "An    Analysis of Geographical Variation in Mice of the 
Peromyscus polionotus Group from Florida and Alabama," 
Jour. Main., 7: 149-184, figs. 1-9, pls. 15-18. 
1932. "Genetic, Distributional and Evolutionary Studies of the Sub-

species of Deer Mice (Peromyscus)," Bibliographia Genetica, 
9: 1-106, figs. 1-24. 
Thning, A. Vedel 
1918. "Mediterranean Scopelidae (Saurus, Aulopus, .hlorophthalmus 
and Myctophum)," Rep. Dan. Oceanog. Exped. 1908-10 to 
Med. and adj. Seas, No. 5, Vol. 2, (Biol., A7): 1-154, figs. 
1-49. 
Thompson, William F. 
1917. "A Contribution to the Life History of the Pacific Herring: Its

Bearing on the Condition and Future of the Fishery," Bept. 
Brit. Col. Comm. Fish., 1916: 39-87, figs. 1-16. 
Tower, William Lawrence 
1918. "The Mechanism of Evolution in Leptinotarsa," Carn. Inst.

Wash. Publ., 263: 1-340, 10 pls. 
Wesenberg-Lund, C. 
1926. "Contribution to the Biology and Morphology of the Genus 
Daphnia, with Some Remarks on Heredity," Mem. Acad. 
Boy. Sci. et Lett. Danemar, Sec. Sci., (Ser. 8) 11, No. 2. 
Woltereck, Richard 
1932. "Races, Associations and Stratification of Pelagic Daphnids in

Some Lakes of Wisconsin and Other Regions of the United 
States and Canada," Trans. Wise. Acad. Sci., Arts and Let- 
ters, 27: 487-522, pl. 13-18. 
 
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