FULMARUS. 57 



Gents OSSIFRAGA Eombron & Jacquinot. (Pago 53, pi. XV., fig. 1.) 



Species. 



Light phase: Head, neck, aud lower parts white; upper parts dusky, tbo 

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

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

 phase: Uniform dark sooty bi'own, sometimes with whitish feathers round base 

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

 72.00-84.00, wing 17.00-21.00, culmen 3.50-4.00. Hab. 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'. 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; 

 (4.) tail-feathers 14. (Subgenus Fulmarus.) 



i'. Nasal tubes distinctly dusky, the whole bill sometimes olive-brownish. 



c'. Light phase : Ilead, 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. Hah. 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). 

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



England 86(Z. F. glacialis minor (Kjaerb.). Lesser Fulmar. 



i'. Nasal tubes light-colored ; bill never dark-colored. 



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

 con-esponding 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 verj- 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 L95. Ilab. North Pacific, south along 

 American coast to western Mexico. 



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



C*. Light phase : Similar to corresponding ])haso of the preceding, but the 



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



admixture of white. Ko dark phase known. Wing 12.10-12.90 



(12.46), culmen 1.40-1.00 (1.49), depth of bill at base .65-.75 (.72). 



