C. L. PROSSER 369 



Thorpe, T. H. 1937. Proc. Roy. Soc. (London), 124, 56-81; and 126, 



370-97. 

 Thorson, G. 1951. Zur jetzigen Lage der marinen Bodentier Okologie. 



VerhandL. detit. Ges. Willwlmshaven, 276-327. 

 Volpe, S. P. 1954. Hybrid inviability between Rana pipiens from Wis- 

 consin and Mexico. Tulane Studies Zool., 1, 110-23. 

 Walshe, B. M. 1948. The oxygen requirements and thermal resistance 



of chironomid larvae from flowing and from still waters. /. Exptl. 



Biol, 25, 35-44. 

 Wells, N. A. 1935. Variations in respiratory metabolism of the Pacific 



killifish, Fandidus parvipinnis, due to size, season and continued 



constant temperature. Physiol. Zool, 8, 318-336. 

 Wells, N. A. 1935. Biol Bull, 69, 361-71. 



