ORNITHOLOGICAL EXPLORATIONS. 



13 



I, p. 54), which, having a bill ••' d'environ deuxpouces,^^ cannot be anything 

 but the common European form. In that case it will be necessary to 

 give the Sardinian bird a new name. It might fitly be called Golymbns 

 salvadorii.* 



A comparison of my specimen from Eastern Asia with a good series 

 of typical grisegena from Europe and typical holhcellii from North Amer- 

 ica has convinced me that they really belong to the latter form. My 

 material indicates no intergradation, and none has been reported so far 

 as I know, so that a trinominal like Golymbus grisegena holbcellii seems 

 totally unwarranted for the present at least. 



In my private collection is a specimen collected by Dr. Dybowski, at 

 the Bay of Abrek, Premorskoj Government, Eastern Siberia, of which 

 measurements are included in the appended table : 



Table of measurements. 



No. 92918. — Iris, light orange yellow ; bill, greenish yellow, at base tinged with reddish brown ; cnl- 

 men and nasal fossae blackish brown, becoming paler toward the tip; naked skin of mental angle 

 greenish yellow. Inner aspect of feet greenish yellow, shaded with dark on the joints ; lobes orang*- 

 colored next to the toea; outer aspect, and toes below, blackish. Stomach filled with a green mass, 

 chiefly consisting of feathers, however. 



The Great Red-necked Grebe does not appear at the islands, except as 

 a rare straggler. A single specimen was taken at Saranna, Bering 

 Island, late in November, 1882. 



* The synonymy of the typical Colymhus grisegena will stand as: 



nSS.—Colymbus grisegena BoDD., Tabl. PI. Enl., p. 55 (Ed. Teget.). 



1784. — Oolymbug suheristatus Jacq., Beitr. Gesch. Vog., p. 37. 



1786.— CoJj/7n6u« parotic Sparum., Mns. Carls, (pi. 9). 



1187.— Podiceps rufieollig Latham, Syn. Siippl., I, p. 294. 



1788. — Colymhus rubricoUis Gmel., Syst. Nat., I, 2, p. 592. 



1790. — Oolymbug longirostrls Bonnat., Enc. Meth Orn., I, p. 54 {nee Bp.). 



1826. — Golymbus cucullatus Pall., Zoogr. Ross. As., II., p. 355. 



1831. — Fodicepg canogularig Breilm, Handb. Vog. Deutschl., p. 958. 



