ORDER RAPTORES. 195 



SUBGENUS 2ESALON KAUP. 



jEsalon KAUP, Sk. Ent. Eur. Thierw. 1829, 40. Type, Falco eesalon 

 GMEL. = F. reguhts PALL. 



357. Falco columbarius LINN. 



Pigeon Hawk. 



Falco columbarius LINN. S. N. ed. 10, I. 1758, 90. 

 [B 7, C 344, R 417, C 505.] 



HAB. The whole of North America, south to the West Indies and 

 Northern South America. 



357 a. Falco columbarius suckleyi RIDGW. 



Black Merlin. 



Falco columbarius var. suckleyi RIDGW. Bull. Essex Inst. V. Dec. 

 1873, 201. 



[B , C 344 a, R 417 , C 506.] 



HAB. Northwest coast region of North America, from California to 

 Sitka. 



358. Falco richardsonii RIDGW. 



Richardson's Merlin. 



Falco (Hypotriorchis) richardsonii RIDGW. Pr. Ac. Nat. Sci. Phila. 

 Dec. 1870, 145. 



[B C 345, R 418, C 507.] 



HAB. Interior and western plains of North America, from the Mis- 

 sissippi River to the Pacific coast, and from the Arctic regions to 

 Texas. 



SUBGENUS RHYNCHOPALCO RIDGWAY. 



Rhynchofalco RIDGW. Pr. Boston Soc. Nat. Hist. 1873, 46. Type, 

 Falco femoralis TEMM. = F. fusco-ccerulescens VIEILL. 



359. Falco fusco-ccerulescens VIEILL. 



Aplomado Falcon. 



Falco fusco-ccerulescens VIEILL. Nouv. Diet. XI. 1817, 90. 



