HYPOTHETICAL LIST. 353 



Recorded as occurring on the Rio Verde, Arizona, but its identity 

 not satisfactorily determined. (Cf. COUES, Bull. Nutt. Orn. Club, VI. 

 1881, p. 248.) 



13. Cathartes burrovianus CASS. 



Burroughs's Turkey Vulture. 



Caihartes burrovianus CASS. Pr. Ac. Nat. Sci. Phi la. II. 1845, 2I2 * 

 [B 4 , C-, R- C-.] 



HAB. Mexico and Eastern South America. Reported as having 

 been seen near Brownsville, Texas. (Cf. DRESSER, Ibis, 1865, p. 322.) 



FAMILY FALCONID^3. 

 14 Buteo cooperi CASS. 



Cooper's Henkawk. 



Buteo cooperi CASS. Pr. Ac. Nat. Sci. Phila. VIII. 1856, 253. 

 [629, C349, R 437, C 5 14.] 



Probably the light phase of B. harlani AUD. (Cf. RIDGW. Auk, 

 I. 1884, pp. 253, 254; Ib. II. 1885, pp. 165, 166.) 



15. Buteo fuliginosus SCL. 



Little Black Hawk. 



Buteo fuliginosus SCL. P. Z. S. 1858, 356. 

 [B -, C - R - C -.] 



HAB. Tropical America ; Florida (accidental ?). Said to be the 

 melanistic phase of B. brachyurus VIEILL. (Cf. RIDGW. Bull. Nutt. 

 Orn. Club, VI. Oct. 1881, pp. 207-214.) 



GENUS RHYNCHOPSITTA BONAPARTE. 



Rhynchopsitta BONAP. Rev. et Mag. Zool. VI. 1854, 149. Type, Ma- 

 crocercus pachyrhynchus SWAIXS. 

 23 



