COTJES, BIRDS OF NEW ENGLAND. 255 



falcon. Mr. John Cassin, in reply to some inquiries of 

 mine upon this subject, kindly furnishes me with the fol- 

 lowing : " I regard the species of Hierofalco of northern 

 America as the F. candicans of authors (e. g. Bon. 

 Cousp. G Av., etc.). F. cinereus Gmelin ; F. Groenlandicus 

 Daudin; F. Labradora Aud. (name on plate) ; F. sacer 

 Forster ; which latter is the name which has priority." 



Falco columbarius Gm, Pigeon Hawk. Generally 

 distributed. Not abundant. Resident. Breeds at least 

 as far south as Massachusetts. (Sam., p. 3.) It ranges 

 through the Middle and into the Southern States in winter. 



o ^^ 



The "Little Corporal" F. temerarius Aud., Nutt., of 

 Peah. (p. 261 ; Liiis., p. 251), is based upon this species 

 in one of its protean plumages, when its upper parts are 

 light slate-blue, as occurs chiefly in very adult birds. 

 There is possibly a second species of Hypotriorchis, the 

 European F. cesalon. Examine in this connection Coues, 

 Pr. A. N. S., Phila., 1866, p. 42 ; and for the occurrence 

 of supposed cKsalon in Mass., see Peab. (p. 270), who 

 quotes Nuttall as authority. 



No. 17, $, adult. Essex Co. H. P. Ives, Sept. 25, 1858. 

 No. 36, young. Essex Co. Thomas H. Johnson, 18G1. 



Falco sparverius Linn. Sparrow Hawk. Resident. 

 Generally distributed and common ; breeds throughout 

 New England. 



No. 16, $, adult. Essex Co. Georga'Goldthwait. 



FALCO AURANTIUS Gm. I find an excellent example 

 of this species in the collection. 



No. 43, Brazil. 



Astur atricapillus Bon. Goshawk. "Partridge" Hawk. 

 Generally distributed. Chiefly winter visitant, and rather 

 uncommon in southern portions ; common, and breeds, in 

 Maine. I have also found it breeding in Labrador. In- 

 dividuals in the adult blue plumage are rarely seen in 

 Mass. (Norway, Me., "common, breeds," Verr., p. 5.) 



No. 22, $, adult. Essex Co. S. Jillson, 1853. 

 No. 292, $. Boxford, Essex Co. Thomas Puller, Nov. 5, 18G7. 

 No. 293, $ , young. Topsfield, Essex Co. Mrs. Killam, Nov. 5, 1867. 

 No. 18, young. Lynn, Essex Co. S. Jillson, 1858. 



Acdpiter Cooperi Bon. Cooper's Hawk. "Chicken 



