MOUNTAIN FAUNAS 91 



relatively long period of larval development would not 

 be easy to find — Whence the adaptation described. In 

 mountain streams in China and Japan occurs Siebold's 

 giant salamander {Cryptobranchus maximus), reaching 

 a length of over five feet. 



Relatively few species of fish occur in mountain 

 streams, doubtless on account of the coldness of the 

 water. 



In regard to the lower forms of life we need only note 

 that with the great development of flowering plants 

 during the short period of summer in most mountain 

 regions, we have a great development of insects, 

 especially butterflies. There is a marked general 

 resemblance between the insects of mountains and of 

 polar regions, due doubtless partly to the similar 

 physical conditions which prevail in the two regions. 



BEFBREisrCBS. Kobelt's book has a good chapter on mountain animals, 

 and Tsohudi's Thierleben der Alpenwelt (ninth edition, Leipzig, 1872) 

 should also be consulted. An account of Alpine animals will also be 

 found in Anderegg's Schweizerische Alpwirischaft (Berne, 189d). There 

 are a number of works on travel in Tibet and the neighbouring regions 

 which give accounts of various of the characteristic animals. Among 

 these may be mentioned : DemidofFs After Wild Sheep in the Altai 

 (London, 1900) ; Adventure, Sport, and Travel on the Tibetan Steppes, 

 by W. N. Eergusson (London, 1911) ; P. T. Etherton's Across the Roof 

 of tlie World (London, 1911). 



