NO. 6 REVISION OF AMERICAN VULTURES V^ETMORE I3 



1953, in Tamaulipas, 8 miles north of Tampico. They recorded 

 others in this general area south of Altamira, and one earher, on 

 June 19, at Lomas del Real, 30 miles north of Tampico, near the 

 Gulf of Mexico. Recently Col. L. R. Wolfe has sent me the skin of 

 an immature bird taken on March 23, 1964, 18 miles south of Alva- 

 rado, in Veracruz. 



Specimens lent to me by Dr. George H. Lowery, Jr., from the 

 Museum of Zoology, Louisiana State University, include five from 

 Teapa, Miramar, and Villahermosa, Tabasco, taken in 1959 and 1960 ; 

 one from Belize, British Honduras, August 26, 1960 ; and tw^o from 

 Puerto Lampira, Honduras, February 5, 1963. In my work in 

 Panama I have found the yellow-headed vulture in the lowlands of 

 the Pacific slope from near the Costa Rican boundary to the Province 

 of Panama near the mouth of the Rio Bayano, 25 miles east of the 

 Canal Zone. 



In view of the known occurrence of these birds in southern Tamau- 

 Hpas the possibility that they may range farther north should be kept 

 in mind. In the early period when the identity of Cassin's Cathartes 

 hurrovianus was not clear Dresser (1865, pp. 322-323) reported a 

 small vulture seen near Brownsville, Tex., that he thought might be 

 this species, but to date there has been no record of it. 



The outline of the range of this race in Colombia is taken mainly 

 from discussion by Lehmann and Dugand. Personally I have ex- 

 amined specimens from Bolivar (Simiti), Atlantico (Laguna de 

 Guajaro), northern Magdalena (Santa Marta), and Guajira 

 (Maicao). 



CATHARTES BURROVIANUS URUBITINGA Pelzeln 



Cathartes Urubitinga Pelzeln, Sitzungsb. math.-naturw. Kl. Akad. Wiss. Wien, 

 vol. 44, pt. 1, 1861, p. 7. (Forte do Rio Branco = Forte Sao Joaquim, Rio 

 Branco, Brazil.) 



Cathartes burrovianns diigandi Lehmann, Mus. Hist. Nat. Univ. Cauca Nov. 

 Colombianas, no. 3, Dec. 1, 1957, p. 120. (Caicara, Bolivar, Venezuela.) 



Larger, wing 457-509 mm. 



Measurements. — Males (27 specimens), wing 457-502 (475.6), 

 tail 205-238 (216.0), culmen from cere 20.5-24.7 (21.9, average of 

 25), tarsus 56.5-68.8 (60.8), approximate width of middle rectrix 

 43-50 (46.9) mm. 



Females (18 specimens), wing 461-509 (484), tail 204-236 (219), 

 culmen from cere 20.8-23.4 (20.7, average of 17), tarsus 53.2-64.0 

 (60.0), approximate width of middle rectrix 43-51 (46.2, average of 

 13) mm. 



