211 



localities not very distant from M. Botteri's head-quarters, it was 

 with much pleasure I undertook, at Mr. Stevens's reąuest, to look 

 through this collection — concerning which I now beg to submit the 

 following remarks to the Society. The greater part of the birds ob- 

 tained by Signor Botteri belong, as might have been expected, to 

 species which have already been mentioned as occurring in M. Salle's 

 collections. I do not think it necessary therefore to repeat the 

 names of these birds, which are upwards of 1 20 in number ; but I 

 think it will be useful to note the species contained in Signor Bot- 

 teri's collection, of wliich M. Salle has not as yet obtained specimens, 

 80 as to render the list of S. Mexican birds as complete as possible. 



Mr. J. H. Gurney has kindly communicated to me the names of 

 the Accipitres in Signor Botteri's collection, and Mr. Gould has 

 been so good as to examine the Humming- birds. 



1. Cathartes aura (L.)? 



2. Cathartes atratus (Bartram) 1 



I have not myself the means of instituting a comparison between 

 these examples and specimens from the United States and from South 

 America — so I cannot say vrhether they are really referable to the 

 northern or southern species — if these are really truly distinct. 



3. POLYBORUS THARUS (MoL). 



This peculiar Accipitrine rangės over the whole of South America 

 down to Patagonia, and northwards as far as Texas and Florida. 



4. Buteo harlant, Aud. 



Mr. Gurney considers this bird probably a variety of Buteo bore- 

 alis. Mr. Gurney remarks, " There apppars to me to be two varie- 

 ties of Buteo borealis freąuently met with : one with a rufous breast 

 and belly, found in Mexico, Texas and California ; the other with a 

 smoky-brown breast, found in Mexico, Texas, and some of the 

 Southern States, but not, as far as I have observed, westward of the 

 Rocky Mountains, and therefore differing in this particular from the 

 range of the red-bellied variety. This brown-bellied variety is the 

 Buteo harlani of Audubon, as may be seen by reference to his ori- 

 ginal specimen in the British Museum." 



The rufous-breasted bird spoken of by Mr. Gurney is doubtless 

 the šame as that called "Buteo montanus, Nuttall," by Mr. Cassin 

 in Proc. Ac. Sc. Phil. viii. p. 39, and previously confounded by him 

 with Buteo Swainsoni. 



5. Buteo lineatus (Gm.). 



6. Buteo pennsylvanicus, ^Vilson. 



7. Buteo erythronotus (King) : Strickl. Orn. Syn. p. 34. 



8. MoRPHNUS ANTHRACiNUS (Licht.) : Strickl. Orn. Syn. p. 25. 



9. CiRCUs HUDSONius (Linn.). 



