494 



COLrilBlLJE. 



and most of the longest under tail-coverts sooty-black ; rest of 

 underparts, including the under -wing-coverts, pure white ; quills 

 and tail-feathers black. Tail composed of 16 or 18 feathers. 

 Eidge of the culmen distinctly convex and similar to that of 

 C. gJacialis, l)ut smaller. Iris hazel-brown ; bill bluish black, 

 lighter towards the base ; legs and feet greenish, the inner side of 

 the tarsus inclining to flesh-colour. Total length about 28 inches, 

 culmen from feathers on forehead 2-1-2-4, wing 11*7-13, tail 

 2'l-2-4, tarsus 3-l-3"2, outer toe and claw 4-l-4"3. 



Adult in non-hreeclhif/ plnmar/e. General colour above deep ashy 

 brown ; top of the head and back of the neck ash, shading into 

 smoky-brown on the sides of the neck ; sides and flanks brownish 

 black ; chin, throat, fore-neck, and rest of underparts pure white. 



The spHiKj moult in this species is much more extensive than in 

 C. septentrionalis, for not only the head and neck but the whole of 

 the upper parts are cast and replaced by the breeding-plumage. 



Yovnc/ in doion. Upper parts dark smoky-brown, underparts paler. 



Young ill first plumage somewhat resemble the adult in winter 

 plumage, but all the feathers of the back, wing-coverts, scapulars, 

 rump, and upper tail-coverts are widely margined with grey. 



Hah. jSTorth of Europe and Asia ; ranging westward to the Faroe 

 Islands and Iceland, and south in winter to the Mediterranean, 

 Black and Caspian Seas. 



a. Ad. sk. 



b. I mm. sk. 

 c,d. 6 2 fid- St. 



e,f. Ad. et pull. 



sk. 

 g. Imm. st. 



h. Imm. sk. 

 i. 2 imm. sk. 



k. S ad. St. 

 /, m. S ad. sk. 

 n. 2 ad. .sk. 



(Treat Britain, summer. 

 Great Britain, winter. 

 Sutherland, June. 



Loch Kuockie, Inverness, May 



& July {E. H.). 

 FuUiam, Middlesex. 



Beccles, Suffolk, Nov. 

 Havre, France, Nov. 25 



(T: Pluche). 

 Alf heim, N. Noi'^s^ay, June. 



Valley of the Yenesay, 



E. Siberia, June 16. 

 Hakodadi, Japan, May 

 (T. Blakisto7i). 

 o-r. Ad. et imm. Yokohama, winter (If. Pryer). 



sk. 

 0. 2 ad. sk. Nagasaki, Dec. 25. 



t, u. Sterna. 



Old Coll. 

 Old CoU. 



Col. L. H. Irby & 

 Capt. S. G. Reid 



Hargitt CoU. 



W. J. Broderip, Esq. 



[P.]. 

 Seebohm Coll. 

 Hai-gitt Coll. 



E. Lort Phillips, 



Esq. [P.]. 

 Seebohm CoU. 



Seebohm Coll. 



Seebohm Coll. 



F. Ringer, Esq. [P.]. 



Subsp. «, Colymbus pacificus. 



Speckled Diver or Loon, Edw. Nat. Hist. B. iii. p. 146, pi. 146 (1750). 

 *? Striped Diver, Pen7ia?tt, Arct. Zool. ii. p. 519 (1785) : Lnth. Gen. 



Syn. iii. pt. ii. p. 345 (1785) ; id. Gen. Hist. x. p. 93 (1824). 

 * ? Colvmbus striatus, Gmel. S. N. i. pt. ii. p. 586 (1788) ; Lath. Lid. 



* Probably founded on a bird of this species assuming the breeding-plumage. 



