132 MESSRS. ROBINSON AND KLOSS ON 



201. Anthracoceros albirostris (Shaw & Nodder). 



Buceros albirostris, Sliaw <fe Nodder, Nat. Misc. xix, 1807, p. 809 



(Chandeniagore, Bengal). 

 IFydrocissa albirostris, A., p. 100 (i^avoy to Bankasoou) ; B , p. 47 



(Junk Seylon). 

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



F., p. 35 (Ti-ang ; Langkawi ; Terutau) ; 

 Anthracoceros albirostris, G., p. 150 (Ratbui-i and Petchabuii) ; J., 



p. 150 (Langkawi) ; L., p. 9G (Gliirbi). 



d, Tung Pran, Takuatung, Peninsular Siam, 12 February 

 1919 (No. 3962). 



d, 9. Hat Sanuk, near Koh Lak, S. W. Siam, 13-15 April 

 1919 (No. 5276, 5318). 



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

 black ; feet greenish grey or black." 



Total length c?, 747; $.720; wing d, 285; ?, 280; tail d, 

 285; ?, 283; tarsus d, 44; 9, 42; bill c?, 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 mm., but judging from the casque are mostly 

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

 308 mm., completely agreeing in this respect with A. ajffinis 

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

 except in size : but Trang is so far from the range of afunis (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 

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

 have little doubt that ajffinis is merely a subspecies of albirostris. 



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

 Bneero=i malabarlcus Gmelin, so we do not use it here. 



202. Anthracoceros coronatus convexus (Temm.). 



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

 Anthracoceros conrexus, D., p. 70 (Patani). 



The sovithern 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 Siilans,'!t, 188-2. F. Robinson and Kloss, Ibis, 1910-11. 



C. Oates. Birds Brit. Biirmah, Vols, i & ii, 1883. C. Gairdner, Journ. N. H. Soe. Siam, i, 191.5. 



D. Bonhote. P. Z. S. 1901, Vol. i. H. Robinson, Journ. F. M. S. Museums, v. 1915. 



.^ ^ . I, . 



JOURN. NAT, HIST. SOC. SIAM. 



