130 



ZOOLOGY 



land connection between Europe and America by Behring's 

 Strait or by the way of Greenland. 



The comparison of the animals of a new country in which 

 one may be journeying \\ith those of one's native land gives 



Fig. 129. — The zoological regions of the globe. 1, North American ; 2, South 

 American; 3, Eurasian; 4, Ethiopian; 5, Oriental; 6, Australian. 



the keenest zest to travel. We see, therefore, how important 

 it is to be acquainted with the native fauna of our own 

 country. 



As a specific example of geographical distribution the cray- 

 fi.sh ' may be considered. This animal, which is closely related 

 to the marine lol^ster,^ is an inhabitant of fresh-water lakes, 

 rivers, and pools. It thrives in diver.se surroundings ; for 



^ The old English spelling of this word was "cre^-is" or "crevice." The 

 ere came to be spelled phonetically cray, while pis became changed to fish in 

 accordance with the popular nomenclature of all aquatic animals. 



2 The English word "lobster" is from the old English lopi/^tre. which ia 

 probably corrupted from the Latin locusta, by which term Pliny refers to 

 the lobster. 



