THE ALPINE FAUNA. 329 



short summary of some of the more characteristic 

 Alpine animals without referring to the Grasshoppers 

 which are so conspicuous in the mountains. The 

 mountain air simply rings during a bright summer's 

 day with the loud and cheerful song of millions 

 of these insects. It is one of the most vivid impres- 

 sions a tourist brings back from Switzerland this 

 constant shrill sound issuing from an apparently 

 invisible source. 



Among these Grasshoppers there are some highly 

 characteristic Alpine genera. Pezotettix formerly 

 known as Podisma is one of these. P. alpinus is 

 almost confined to the high Alps ; with P. mendax 

 it occurs in lower levels chiefly towards the south- 

 east, that is to say, in the direction of Hungary, 

 Servia, and Dalmatia. P. frigidus occurs not only 

 in the high Alps, but also in Lapland. P. ScJimidti 

 and P. salamandra are found in Carinthia, Servia, 

 and Transylvania; and one species also inhabits 

 the Pyrenees and another the Italian Mountains. 

 Finally, the only English species of Pezotettix^ 

 viz. P. pedestris, has been taken in Sweden, Den- 

 mark, and then again in Austria, Hungary, Servia, 

 etc., as far east as the Volga, and also on the high 

 Alps, in Sardinia and the Abruzzi Mountains in 

 Italy. 



Very little, as I remarked, is known of the Asiatic 



range of this genus, but either the same or a closely 



- allied one has many representatives in North and 



South America. Whether Pezotettix is therefore 



