204 



ORNITHOLOGICAL EXPLORATIONS. 



I have been unable to distinguish, at present, the alleged races of 

 this particular form, the Greenland holbcelli and the typical Icelandic 

 bird. My specimens from Bering Island are rather light, however, 

 and may, perhaps, be nearest related to the Greenland race, if any 

 average differences exist. I should, however, be inclined to the belief 

 that in such case the Pacific bird might be entitled to separate recogni- 

 tion. The paucity and smallness of the dark spots on the under parts 

 would seem to indicate such a possibility, but, as remarked above, I 

 shall not venture to separate the possible races of the Gray Gyrfalcon, 

 at present. 



List of specimens obtained. 



* Grebnitski. 



No. 92719. — Bill and cere bluish white ; tip, including tooth, homy black ; naked eye-ring white, 

 faintly tinged with bluish. Feet white with a faint tinge of blue and yellow ; nails uniform, horny 

 black. Contents of crop : two Arvicolft. 



No. 92718.— Bill very light bluish gray; tip, including tooth, blackish; naked eye-ring binish 

 white with a strong yellowish wash behind the eye. Feet dirty white with a slight tinge of blue and 

 yellow (not green, however!). In the stomach a ball of hairs of Arvicolce. Kather fat. Weight, 4 

 pounds. New feathers in .sheaths protruding all over the body, especially on the back. 



No. 92720. — Iris dark brown. Bill light grayish blue, tip and tooth blackish ; cere and naked eye- 

 ring light bluish gray with a yellowish tinge. Feet dirty bluish white with a yellowish wash. Testes 

 not swollen. Crop and stomach filled with remains of several J. rricote. Not fat. Weight, 4 pounds. 

 New feathers in sheaths here and there all over the body. 



No. 92721. — Bill light bluish gray, terminal half of both mandibles dark horny blue ; naked eye-ring 

 light bluish gray ; cere gray with an olive shade. Feet bluish white, yellowish underneath. Ova 

 swollen, the diameter of the largest being 5.5""*. Crop and stomach empty. Extremely fat. Weight, 

 4J pounds. Now feathers protruding. 



91. Faico islandus BrCnn. 



n64.—Falco islandus BrCnnich, Orn. Bor., p. 2, Nos. 7 and 8.— Fabkicius, Fauna 

 GrceuL, p. 58 (1780).— Latham, Suppl. Synops., I, p. 282 (1787).— Stj: jne- 

 GER, Auk, 1885, p. 187. 



1783.— faico giirfalco Boddaert, Tabl. PI. Enl. (pi. 446), p. 26 (nee IjISN.). -Accipiier 

 gyrfalco Schaffer, Mus. Orn., p. 7, pi. i (1769).— Brehm, Lehrb. Vog. Eur., 

 p. 4:5 (182:5).— Pallas, Zoogr. Ross. As., I, p. 324 (1826). 



1786. — Faleo rusticolus Mohr, Islandsk Naturh., p. 19 (part). 



1788. — FaIco islandus fi albus Gmelin, Syst. Nat., I, p. 271. 



1788. — Falco islandus y maculatus Gmelin, Syst. Nat., I, p. 271. 



1788.— /'a?co candicans Gmelin, Syst. Nat., I, p. 275.— D all &, Bannist., Tr. Chic. 

 Ac, I, 1869, p.271.— Blak. & Pr., Ibis, 1878, p. 249.— Paxm^n, Swed, Cat. 



