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A Guide to the Study of Fishes, Volume 1 (of 2) Chapter 15 ISTHMUS BARRIERS SEPARATING FISH FAUNAS 
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A Guide to the Study of Fishes, Volume 1 (of 2) Chapter 15 ISTHMUS BARRIERS SEPARATING FISH FAUNAS Chapter 15 ISTHMUS BARRIERS SEPARATING FISH FAUNAS
The Isthmus of Suez.-In the study of the effect of the Isthmus of Suez on the distribution of fishes we may first consider the alleged resemblance between the fauna of the Mediterranean and that of Japan. Dr. Günther claims that the actual identity of genera and species in these two regions is such as to necessitate the hypothesis that they have be
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