66 



LIST OF DIURNAL BIRDS OF PRET. 



' There described under the title of '^Buteo borealis (socorroensis)," as " a species or 

 race " peculiar to the island of Socorro ; Mr. Ridgway also mentions as probably 

 distinct the Buzzard inhabiting the island of Tres Marias. 



^ Audubon refers both this sjiccies and B. borealis io the genus Falco. 



