132 MESSRS. ROBINSON AND KLOSS ON 



201. Anthracoceros albirostris (Sliaw & Nockler). 



Bucpi-os albirostrift, Sliiiw &■ Noddor, Nat. Misc. xix, 180?, p. 809 



(Cli:in(leni:i<^ore, Beiii^al). 

 Ifydroclssa albirosirif, A., p. 100 ('r.-ivoy to Bankasoou) ; B, p. 47 



(Junk Seylon). 

 Anthracoceros malaharicus, D., p. 70 (Patelunii); E., p. 107 (Patani); 



F., p. 35 (Tiiing ; Luigkawi ; Tenitau) ; 

 Anthr(Woceros albirostris, G., p. 150 (Kiitlani and Petchahiiii) ; J., 



p. 150 (Langkawi) ; L., p. 96 (Gliirbi). 



c^. Tung Fran, Takuatuug, Peninsular Siani, 12 February 

 1919 (No. 3962). 



c^, ?. Hat Sanuk, near Koh Lak, S. W. Siam, 13-15 April 

 1919 (No. 5276, 5318). 



"Iris red, orbits silvery tinged witli blue; bill ivory and 

 black ; feet greenish grey or black." 



Total length cJ, 747; 5, 720; wing 6, 285; ?, 280; tail c?, 

 285; $, 283; tarsus c?, 44; $, 42; bill 6, 139; 2, 137 mm. 



Specimens from the islands off Takuatung, and from Terutau 

 and Langkawi as -well as from Junk Seylon, are all small with the 

 wing less than 265 ram., but judging from the casque are mostlj'' 

 juvenile. An adult male from Chong, Trang, is large, with the wing 

 308 mm., completely agreeing in this respect with A. affi^nis 

 (Blyth) from the Himalayas. The birds do not appear to differ 

 except in size : but Trang is so far from the range of a^nis (Dehra 

 Dun to Eastern Assam) that we hardly care to identify by that name 

 an isolated specimen found at the farther extremity of the range of 

 alhirosfris : nor, for the moment, do we use trinomials though we 

 have little doubt that affcnis is merely a subspecies of alhiroftfrifi. 



There is some doubt as to the application of the earlier name 

 Bticoro^ malaharicus Gmelin, so we do not use it here. 



202. Anthracoceros coronatus convexus (Temm.). 



Buceros coiivexus, Temminck, PI. Col. 1831, pi. 530, (Java). 

 Anthracoceros convexus, -T)., p. 70 (Patani). 



The southern from of the genus, reaching its northern limit 



in Patani. 



A. Hume & Davison, Stray Feathers, vi, 1878. E. O. Grant, Fasciculi Malayenses, iii (Birds), 1905. 



B. Miiller, Die Ornis der Insel Siilanwi. 1882. F. Robinsun and KIoss, Fljis, 1910-11. 



C. Oates, Birds Brit. Bdrinali, Vols, i \- ii, 188.3. C (iairdner, .lourn. X. H. Soc. Siam, i, 191.5. 



D. Bonliotc. r. Z. S. 1901, Vol. i. H. Rol)inson, .lourn. F. M. S. Museums, v, 1915. 



JOURN, NAT. HIST. SOC. SIAM. 



