HYPOTHETICAL LIST. 329 
Famity CATHARTIDZ. 
Genus GYPAGUS VIEILLOT. 
Gypagus Viettt. Analyse, 1816, 21. Type, by elimination, 
Vultur papa LINN. 
12. Gypagus papa (LINN.). 
King Vulture. 
Vultur papa Linn. S. N. ed. ro, I. 1758, 86. 
Gypagus papa VIEILL. Nouv. Dict. d’Hist. Nat. XXXVI. 1819, 
456. 
[B—, C—, R—, C—.] 
Groc. Dist.— Tropical continental America. Recorded as occur- 
ring on the Rio Verde, Arizona, but its identity not satisfactorily 
determined. (C% Coves, Bull. Nutt. Orn. Club, VI. 1881, p. 248.) 
13. Cathartes burrovianus Cass. 
Burroughs’s Turkey Vulture. 
Cathartes burrovianus Cass. Pr. Ac. Nat. Sci. Phila. II. 1845, 212. 
[B4,C—, R—, C—.] 
Groc. Dist.— Mexico and eastern South America. Reported as 
having been seen near Brownsville, Texas. (Cf DressEr, Ibis, 1865, 
p. 322.) 
FaMILy FALCONID ZA. 
14. Buteo cooperi Cass. 
Cooper's Henhawk. 
Buteo cooperi Cass. Pr. Ac. Nat. Sci. Phila. VIII. 1856, 253. 
[B 29, C 349, R 437, C 514.] 
Probably the light phase of B. arlani Aup. (Cf Ripew. Auk, 
I. 1884, pp. 253, 254; tid., II. 1885, pp. 165, 166.) 
