202 U.S. NATIONAL MUSEUM BULLETIN 221 



Rhyticeros undulatus ticehursti Deignan 

 Auk 58 (3) : 397, July 9, 1941. 

 336836. Adult male, Huai Oi ( 14 km. northeast of Ban Sop Li, which lies 

 at the confluence of the rivers Mae Li and Mae Nan), Nan Province, 

 northern Siam. April 4, 1937. Collected by Herbert G. Deignan. 

 Original number 2500. 



Genus ANTHRACOCEROS Reichenbach 



Hydrocissa convexa barussensis Oberholser 



Journ. Washington Acad. Sci. 14 (13) : 300, July 19, 1924. 

 =Anthracoceros convexus (Temminck) , fide Deignan (ms.) . 

 179786. Adult (sex not indicated). Pulau Tana Bala, Batu Group, 

 Barussan Islands, eastern Indian Ocean off Sumatra. February 11, 

 1903. Collected by William L. Abbott. 

 Hydrocissa convexa zamelaena Oberholser 

 U.S. Nat. Mus. Bull. 159: 38, 1932. 

 =Anthracoceros convexus ( Temminck ),^c?e Deignan (MS.). 

 174704. Adult male. Pulau Lingung, northern Natuna Islands, South 

 China Sea. June 14, 1900. Collected by William L. Abbott. 

 Anthracoceros Marchei Oustalet 



Le Naturaliste 7 (14) : 108, July 15, 1885. 

 =Anthracoceros marchei Oustalet. See Peters, Checklist of birds of the 



world 5: 267, 1945. 

 118618. Adult male. Puerto Princesa, Palawan Island, Philippine Islands. 

 January 1884. Collected by Alfred Marche. Original number 2080. 

 Received from the Museum National d'Histoire Naturelle, Paris. 

 Oustalet established this form upon "several" specimens from Palawan, 

 three from Busuanga, and two from Balabac. The remaining cotypes are 

 presumably still preserved in the museum at Paris. 



Genus BUCEROS Linnaeus 



Buceros obscurus Peale 



U.S. Exploring Expedition 8 (Mamm. and Orn.) : 125, "pi. XXXIII," 

 1848. 

 =Buceros hydrocorax mindanensis Tweeddale, fide Deignan (ms.). 

 15273. Adult female. Near Zamboanga, Zamboanga Province, Mindanao 

 (not Mindoro) Island, Philippine Islands. Original number 302. U.S. 

 Exploring Expedition (1838-1842). 

 This name has been wholly overlooked in the literature at hand. The 

 bird of Mindanao is a perfectly distinct form, but Peale's designation is pre- 

 occupied by [^Buceros'\ obscurus Gmelin, 1788. 



