LIST OF DIURNAL BIRDS OF PREY. 



Ill 



^ Both Professor Newton and Mr. Dresser refer the Falcons of this subgenus to the 

 genus Falco. 



^ Included by Mr. Sharpe amongst the synonyms of H. gyrfalco. 



3 Of these specimens ten are European and four North-American. As to the existence 

 of this species on the North-American continent, see Appendix N. 



^ One of these specimens (in immature plumage) was killed in Ross-shire. 



° For some additional remarks on H. holbcBJli, see Appendix N. 



° Here figured ai "Falco islandus," 



