CLASSIFICATION. 



a'. Bill stout, the rami of the mandible strong ; 



nasal tube large and high at the base, equal to 



the width of the latericorn ; tarsi stout . . . . Fulmarus, p. 265 



o'. Bill more slender ; rami of mandible weak ; nasal 



tube smaller, narrower, and lower at the base, 



less than the width of the latericorn ; tarsi 



slender . . . . . . . . . . . . Daption, p. 276 



c. Smallest ; nasal tube short ; rectrices 12 in number. 



c'. Lamellae on the sides of the palate rudimentary ; 



first and second primaries sub-equal ; tail tipped 



with white. . . . . . . . . . . . . Halobcena, p. 281 



d'. Lamellae on the sides of the palate more or less 



well-developed ; first primary longest ; tail tipped 



with black . . . . . . . . . . . . Prion, p. 285 



XVII. — Macronectes, Richmond. 



Type 



Ossifraga, Hombr. et Jacq., Comptes Rendus, XVIIL, p. 

 356 (1844) (nee Wood) ; Bp., Consp. Av., II., p. 186 

 (1855) ; Coues, Pr. Acad. Nat. Sci. Philad., 1866, 

 p. 31 ; Forbes, Voy. " Challenger," Zool., IV., pt. XL, 

 p. 42 (1882) ; Salvin, Cat. Birds Brit. Mus., XXV., 

 p. 422 (1896) . . . . M. giganteus. 



Macronectes, nom. emend., Richmond, Pr. Biol. Soc. Washington, XVIIL, p. 76 (1906). 



A single species, M. giganteus (p. 261), confined to the Southern Oceans. 



XVIIL— Fulmarus, Steph. 



Type 

 Fulmarus, Steph. in Shaw's Gen. Zool., XIII. , p. 233 (1826) ; 



Bp., Consp. Av., II., p. 186 (1855) ; Coues, Pr. 

 Acad. Nat. Sci. Philad., 1866, p. 28 ; Forbes, Voy. 

 " Challenger," Zool., IV., pt. XL, p. 42 (1882) ; 

 Salvin, Cat. Birds Brit. Mus., XXV., p. 424 (1896). . F. glacialis 



Rhantistes, Kaup, Natiirl. Syst., p. 105 (1829). 



Wagellus, Gray, List Gen. Birds, p. 78 (1840). 



Key to the Species. 

 a. Nasal tubes dark . . . . . . . . . . . . glacialis, p. 265 



6. Nasal tubes yellow. 



XLLX 



