ON NORTH AMERICAN ZOOLOGY. 



191 



species in his list of Massachusetts Inrds, 12G of which breed 

 within the limits of the state*. Out of 208 which were de- 

 tected by us oil the Saskatchewan, 146 species breed there, 

 while the permanent residents and winter visiters do not exceed 

 25 or .SO species. 



The following table, which is compiled from the Prince of 

 Musignano's " Sj)ecchio comparativo" , Dr. Emmons's list, 

 and the Fauna boreali-americana, indicates the number of 

 species that breed in three distant localities, the permanent 

 residents, and those which come from the south in summer to 

 breed being included in this number. A second column un- 

 der each head comprises both the birds of passage and ac- 

 cidental visiters, these two classes not being easily distin- 

 guished in the present state of our knowledge of North Ameri- 

 can ornithology. A few observations on the several families 

 follow the table. 



Rapaces. — The vultiiridcE, as we have already mentioned, 

 belong properly to the warm latitudes. Four of the five which 



• List of the birds of Massachusetts, prepared by order of the State Legisla- 

 ture. By Ebenezer Emmons, M.D. 



+ The inland situation of Cumberland and Carlton-houses on the Saskatche- 

 wan excludes the alcadte from their fauna. 



