FULMARUS: 57 



Genus OSSIFRAGA Hombron & Jacquinot. (Page 53, pi. XV., fig. 1.) 



Species. 



Light phase: Head, neck, and lower parts white; upper parts dusky, the 

 feathers (especially scapulars) sometimes tipped with paler ; bill light yellowish. 

 (Sometimes entirely white, relieved only by scattered brown feathers.) Dark 

 phase : Uniform dark sooty brown, sometimes with whitish feathers round base 

 of bill; bill olive-yellowish or grayish white; length, about 30.00-36.00, extent 

 72.00-84.00, wing 17.00-21.00, culmen 3.50-1.00. Sab. Southern seas, north on 

 Pacific coast of America (casually) to coast of Oregon. 



85. O. gigantea (Gmel.). Giant Fulmar. 



Genus FULMARUS Leach. (Page 54, pi. XVI., figs. 1, 2.) 



Species. 



a 1 . Bill short and stout, its greatest depth very nearly half the total length (meas- 

 ured from frontal feathers) ; nasal tubes separated from the unguis by a very 

 narrow space, measuring much less than half as much in length as the former; 

 tail-feathers 14. (Subgenus Fulmarus.) 

 b 1 . Nasal tubes distinctly dusky, the whole bill sometimes olive-brownish. 



c 1 . Light phase : Head, neck, and lower parts white ; upper parts bluish 

 gray, the quills darker. Dark phase : Entirely smoky gray. Length 

 18.00-20.00, wing 12.50-13.75 (13.04), culmen 1.45-1.58 (1.50), depth 

 of bill at base .65-.80 (.75). Egg 2.85 X 2.01. Sab. North Atlantic. 



86. F. glacialis (Linn.). Fulmar. 



c'. Similar in color to F. glacialis, but much smaller; wing 11.80-12.00 



(11.90), culmen 1.30-1.38 (1.33), depth of bill at base .60-.70 (.63). 



Sab. North Atlantic, south on American side to coast of New 



England 86a. F. glacialis minor (Kjaerb.). lesser Fulmar. 



V. Nasal tubes light-colored ; bill never dark-colored. 



c 1 . Light phase : In plumage not with certainty distinguishable from the 

 corresponding phase of F. glacialis. Dark phase : Much darker than 

 the corresponding phase of F. glacialis, the color being a uniform 

 deep sooty plumbeous in living and freshly-killed birds, changing 

 to deep sooty brownish in very old skins. Length 17.00-19.00, wing 

 11.90-12.35 (12.06), culmen 1.35-1.65 (1.48), depth of bill at base 

 .65-.70 (.68). Egg 2.82 X 1-95- Sab. North Pacific, south along 

 American coast to western Mexico. 



86&. F. glacialis glupischa Stejn. Pacific Fulmar. 



c l . Light phase : Similar to corresponding phase of the preceding, but the 



bluish gray of the upper parts broken by a more or less extensive 



admixture of white. No dark 'phase known. Wing 12.10-12.90 



(12.46), culmen 1.40-1.60 (1.49), depth of bill at base .65-.75 (.72). 



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