484 ON A COLLECTION OF BIRDS FEOM THE [1877. 



the Papuan Hornbill. Gmelin's title ohscurus and its synonym jjlicatus, Lath., being thus 

 restored to their original owner (i. e. B. plicatus, Forster), the oldest available title for the 

 Malayan bird becomes undulatus, Shaw. 



A form very closely allied to the Malayan B. undulatus occurs in Tonghoo, which Mr. Blyth 

 separated (J. A. S. B. 1843, p. 177) under the title of subniJjcoUis, the synonymy of the Papuan 

 bird and of the ISIalayan being at that time exceedingly involved, and the species themselves not 

 well known. Mr. Blyth subsequently twice identified his B. subruJicoUis with Malayan 

 B. plicatus {op. cit. xii. p. D91, xvi. p. 998), but eventually returned to his original view, and 

 retained B. suhruJicoUis as distinct (Cat. Calc. Mus. p. 320, no. 191). 



B. subruJicoUis is only to be distinguished from B. undulatus by wanting, in the two sexes, 

 the lateral ridges on the base of both mandibles, and by the bill not being so deep and m'assive. 

 It does not possess a black transverse bar on the naked gular skin of either sex *, but that part 

 in the male is yellow, and in the female blue, as in B. undulatus. It is remarkable that two 

 Ibis 1877. such closely allied forms should coexist in the same area ; and yet there seems no doubt that both 

 p. 296. inhabit Tenasserim ; and an example of a young male obtained at Tonghoo by Mr. W. Ramsay 

 bclonns to B. undulatus, while the remainder of a vei-y large series from that district consist of 

 nothing but B. subruJicoUis. There is little or no difference in the general dimensions, although 

 Mr. Blyth considered that the body of B. undulatus was heavier than that of its ally. 



B. narcondami, Hume (Str. F. i. p. 4-41), as described, seems to be another closely allied 

 form. No mention is made of lateral ridges on the mandibles. 



31. C.\KCISEUTES PULCHELLUS. 



Bacelo pulchella, Horsf. t. c. p. 175, "Java" (1820). 

 Carcineutes pulcliellus (Horsf.); Sharpe, Mon. Alced. t. 9G. 



This bird is not separable from Malaccan and Peguan examples. 



32. Halcyon pileata. 



Alcedo pileata, Bodd. Tab. PL Enl. p. 41 (1783). 

 Alcedo atricapilla, Gm. ; Baffles, t. c. p. 293, " Sumatra." 



33. Saukopatis chlokis. 



Alcedo chloris, Bodd. Tabl. PI. Enl. p. 49 (1783). 



Alcedo cldorocephala, Gm., Raffles, t. c. p. 293, " Sumatra." 



34. Pelakgopsis fb.\seei, Sharpe, P. Z. S. 1870, p. 05, "Java, Sumatra, Malacca;" Mon. 

 Alced. t. 33, " Sumatra." 



Alcedo leucoce2)halus, Gm., Raffles, t. c. p. 293, " Sumatra." • 



The four examples obtained by Mr. Buxton most closely resemble the Bornean form referred 

 by Mr. Sharpe in his monograph to P. leucocephala, the cap, however, being more pronounced. 



* ilr. Wardlaw llamsay, who paid special attention to this Hornbill when in Burma, is quite positive on this 

 point. 



