References 351 



Darlington, P. J., Jr. 1938. Experiments on mimicry in Cuba, with sug- 

 gestions for future study. Royal Ent. Soc. London Trans. 87:681-696. 



'. 1957. Zoogeography: the geographical distribution of animals. 



John Wiley & Sons, Inc., New York. 



Darwin, Charles. 1859. On the origin of species by means of natural 

 selection. John Murray, London. 



de Beaufort, L. F. 1951. Zoogeography of the land and inland waters. 

 Sidgwick and Jackson, London. 



Deevey, E. S. 1949. Biogeography of the Pleistocene. Geol. Soc. Amer. 

 Bull. 60:1315-1416. 



de Laubenfels, D. J. 1959. Parasitic conifer found in New Caledonia. 

 Science 130:97. 



DeLong, D. M. 1948. The leafhoppers, or Cicadellidae, of Illinois (Eury- 

 melinae-Balcluthinae). 111. Nat. Hist. Surv. Bull. 24:97-376. 



Demerec, M. 1955. What is a gene?— twenty years later. Amer. Nat. 

 89: 5-20. 



Dethier, V. 1954. Evolution of feeding preferences in phytophagous in- 

 sects. Evolution 8:33-54. 



Dice, R. L., and P. M. Blossom. 1937. Studies of mammalian ecology in 

 southwestern North America with special reference to the colors of 

 desert mammals. Carnegie Inst. Washington, Washington, D. C. 



Digby, L. 1912. The cytology of Prinmla kewensis and of other related 

 Primula hybrids. Ann. Bot. 26:357-388. 



Dingle, H. 1954. Science and modern cosmology. Science 120:513-521. 



Dobzhansky, T. 1937. Genetics and the origin of species. Columbia Univ. 

 Press, New York. See also revised edition, 1941. 



. 1946. Genetic structure of natural populations. Carnegie Inst. 



Yearbook 45:162-171. 



. 1948a. Genetics of natural populations. XVI. Altitudinal and 



seasonal changes produced by natural selection in certain popula- 

 tions of Drosophila pseudoobscura and Drosophila persimilis. 

 Genetics 33:158-176. 



. 1948b. Genetic structure of natural populations. Carnegie Inst. 



Yearbook 47:193-203. 



. 1951. Genetics and the origin of species. 3d ed. Columbia Univ. 



Press, New York. 



