COLYMBID.E. 



513 



SUB-FAMILY I. 



COLYMBIN.E.'"' 



Tlie True Divers. 



Gen. Charac— Bill long, straight, with the tip curved, and the sides com- 

 pressed ; the nostrils basal, lateral, and placed in a groove, with the opening 

 linear and pervious ; the wings long and pointed ; the tail very short ; the 

 tarsi short and much compressed ; the toes long, the fore toes united 

 together by an entire web, the hind toe short, and slightly margined by a 

 membrane. 



Fig. 200.— the gheat noutherx divee. 

 {Cohjmhns f/laciuUtf.) 



These birds are found in tlie Arctic circle, but 

 migrate to tlie more temperate climates during 

 severe winters. They are observed on the sea- 



* /cyXi)/x/3//r/;c, colj'mbetes, a diver; whence colymbus, a pond 

 to sivini in. 



