216 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



skin behind the tibiae with the upper half pink, the lower half greenish 

 blue ; the tarsi green behind, greenish yellow in front ; the toes blackish 

 brown ; the soles light brown ; the claws black. 



This is an enormous bird with a large, heavy, curved bill (sur- 

 mounted in the adult by a broad bifid casque), broad wings, and a rel- 

 atively long tail. It has the face and throat black; the neck all 

 white ; the back and scapulars black ; the upper tail coverts and tail 

 white, the latter with a broad black subterminal band; the wings 

 black with a broad white band near the center and another along the 

 hinder edge; the breast and upper abdomen black; the remaining 

 underparts white. As has been mentioned above, some of the white 

 areas are stained bright yellow in life. 



Specimens from Sumatra, Malaya, and all Thailand show a gradual 

 increase in length of wing from south to north, and I believe that 

 subspecies based upon size of nonmolting adults may properly be 

 recognized. 



Only Hume (Stray Feathers, vol. 4, 1876, pp. 384-387) seems to 

 have brought together examples from South India, the Himalayas, 

 and Malaysia, and, while he placed all under one name, he clearly 

 indicated that Himalayan birds are largest, Malayan smallest, and 

 those of Travancore intermediate. Specimens from Thailand north of 

 the Isthmus are likewise intermediate and must be called by whatever 

 name is applied to the population of Travancore. 



I accept Sumatra as type locality of the nominate race (see Chasen, 

 Handlist of Malaysian Birds, 1935, p. 105, footnote). This leaves 

 cavatus of Shaw as the earliest available name for a non-Malaysian 

 subspecies, with type locality by designation "India," here further 

 restricted to Travancore, as the part of its Indian range most likely 

 to be the provenance of a specimen taken before 1812. This makes 

 the name cavatus certainly applicable to the intermediates of Travan- 

 core and Thailand and leaves homrai of Hodgson for the Himalayan 

 population, if they be considered large enough to justify recognition 

 of yet a third race. 



ANTHRACOCEROS CORONATUS LEUCOGASTER (Blyth) 



Tenasserimese Pied Hornbill 





B[uceros] leucogaster Blyth, Journ. Asiat. Soc. Bengal, vol. 10, 1841 [=1842], 

 p. 922 (Tenasserim; type specimen "procured in the the vicinity of Maul 

 main," fide Blyth, ibid., p. 917). 



Anthracoceros aJbirostris, Gyldbnstolpe, Kungl. Svenska Vet.-Akad. Handl 

 1913, p. 55 (Ban Huai Horn, Mae Raem and Mae Song rivers) ; 1916, p. 112 

 (Pha Kho, Pang Hua Phong, Khun Tan) ; Journ. Nat. Hist. Soc. Siam, 1915, 

 p. 232 (listed) ; Ibis, 1920, p. 586 ("Throughout the country"). 



Hydrocissa malabarica leucogastra, Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 

 1931, p. 162 (Doi Suthep) ; 1936, p. 94 (Chiang Mai, Doi Suthep). 



Hydrocissa malabarica leucogaster, de Schauensee, Proc. Acad. Nat. Sci. Phil- 

 adelphia, 1934, p. 263 (Khun Tan, Doi Suthep). 



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