colymbidjB. 201 



Order PYGOPODES. 



Family COLYMBlDiE. 

 Genus COLYMBUS, Unnceus, S. N. i. p. 220 (1766). 



Colymhus = k6Xh/i^os, a. diver ; KoXw/i^aiu = I dive, lit. I " take a header ;" 

 akin to Kopvij>r] = the head. 



Colym'bus glacialis. Great Noetheen Diver. 



Colymbus glacialis, Linnceus, S. N. i. p. 221 (1766). 



Eudytes glacialis, Naum. xii. p. 397. 



Colymbus glacialis, Macg. v. p. 283; Hewitson, p. 449; 



Gray, p. 211; Yarr. ed. 2, iii. p. 425; id. ed. 3, iii. 



p. 428; Gould, V. pi. 43; Harting, p. 68; Dresser, viii. 



p. 609. 

 The Great Northern Diver, Yarr. ed. 1, iii. p. 320. 

 Glacialis = living among the ice, glacUs, 



Is believed to breed in some of the Shetland Islands, and 

 occurs on the coasts of the United Kingdom from autumn 

 to spring. It inhabits the Palsearctic and eastern Nearctic 

 Regions. 



[Colymbus adamsi. Yellow-billed Dives. 

 Colymbus adamsi i. Gray, P. Z. S. 1859, p. 167. 

 Adamsi, in honour of Surgeon Adams, who discovered it. 

 A specimen having some of the characters of this species, 

 from Pakefield, in Suffolk, was exhibited by Mr. P. L. Sclater 

 (P. Z. S. 1859, p. 206). Occurs in Alaska and various parts 

 of Arctic America and Asia. It is now regarded by Dr. 

 Coues (B. N. W. 1874, p. 721) as a mere variety of 

 Colymbus glacialis,] 



Colymbus arcticus. Black-throated Diver. 



Colymbus articus, Linnceus, S. N. i. p. 221 (1766) . 



Eudytes arcticus, Naum. xii. p. 418. 



Colymbus arcticus, ilfac^r. v. p. 294; Hewitson, ii. p. 451; Gray, 



