150 Journal of the F.M.S. Museums. VioLa wall 
Fairly common on both the above islands. 
A comparison of the above series and seventeen other 
specimens from various parts of the Malay Peninsula 
with nine specimens from Eastern Java (Idjen massif, nr. 
Banjoewang1) show that it is readily possible to distinguish 
the Malayan and Siamese from the typical Javan form, in 
that, both in males and females the rump and upper tail 
covert are concolorous with the back and not strongly tinged 
with zanthine orange. Dimensions are practically identical. 
Types: Adult male, Lamra, Trang, Siamese Malaya, 
collected on January roth, 1gto. 
Adult female: Gunong Jerai (Kedah Peak), Kedah, 
2,800 ft. to 3,500 ft. collected on December 2nd, 1915. 
Remarks: It is possible that Oreskios gouldt quoted by 
Ogilvie Grant, (Joc. cit.) as of Bp. Consp. Vol. Zyg. p. 14 
(1854) applies to this bird, but I have no access to the 
reference. The name, however, is of earlier date as it is 
quoted by Bonaparte in 1850 (Consp. Av. I, p. 151) aS a 
synonym of Trogon oreskios and attributed to Swainson, 
though I cannot trace the quotation. I prefer, therefore, 
to regard it as a nomen nudum. 
40. DICHOCEROS BICORNIs~ (Linn.) 
Ogilvie Grant, Cat. Birds. Brit. Mus. XVII, p. 355 
(1892); Robinson and Kloss, p. 35; Robinson, Ibis, 1915, p. 7333 
Gyldenstolpe, p. 113. 
a. 6. W.side Pulau Telibun, Trang, S.W. Siam, 
2nd January, 1917. [No. 3911.] 
Common on Terutau, Langkawi, Telibun and Lontar, 
but nearly always flying very high or feeding on very lofty 
trees and therefore difficult to procure. 
41. RHYTIDOCEROS UNDULATUS (Shaw). 
Ogilvie Grant, tom. cit. p. 382; Robinson and Kloss, 
p. 36; Robinson, Ibis, 1915, p. 7333; Gyldenstolpe, p. 113. 
@. & Pasir Raja, Pulau Lontar, SW; Siam, 
12th January, 1917. [No. 3912.] 
Also comrnon on the islands. 
42. ANTHRACOCEROS ALBIROSTRIS (Shaw and Nodder.) 
Anthracoceros malabaricus, Grant, tom. cit. p. 365; 
Robinson and Kloss, p. 35. 
Anthrococeros albirostris, Robinson, Ibis, 1915, p. 734; 
Gyldenstolpe, p. 112. 
a. ?. Burau, N.W. Langkawi. 13th December, 
10H |) ING -3{0310- 
“Tris hazel, bill and casque ivory, black at tip and 
base, feet pale plumbeous with a greenish cast.” 
