THE MALAYAN WREATHED HORNBILL. 93 



founded the two species. It is therefore quite as probable that he procured 

 the former and not the latter in Arrakan. 



This Hornbill is almost invariably seen in large flocks, flying low, and, 

 when on trees, not showing the same amount of watchfulness as the other 

 species. At Myitkyo, where I had ample opportunities of observing them, 

 I saw them flying in hundreds over the canal-lock and its neighbourhood 

 every morning during the earlier months of the year. After crossing the 

 Sittang river and the canal they would settle on the Pegu plain, and spend 

 the whole morning hopping about the ground. On shooting them on their 

 return to the forests on the east of the Sittang, I found their pouches full 

 of earth and snail-shells : the former was probably required for their 

 nests, and the latter no doubt they fed largely on. I got an egg in March 

 in the forests west of Payagalay, on the Tonghoo road ; it was placed in 

 a natural hollow at an immense height in a wood-oil tree, and the female 

 was built in with clay. 



480. RHYTIDOCEROS UNDULATUS. 

 THE MALAYAN WREATHED HORNBILL. 



Buceros undulatus, Shaw, Gen. Zool viii. p. 26. Buceros pusaran 



Tick. Ibis, 1864, p. 180 (part.). Rhyticeros obscurus (Gm.), Hume, Nests 

 andEyys,^. 115. Rhytidoceros obscurus (Gm.*), Salvad. Ucc. Born. p. 85. 

 Aceros plicatus (? Lath.), El. B. Bunn. p. 69. Rhytidoceros undulatus, 

 Elliot, Man. Bucer. pi. xxxv. ; Tweedd. Ibis, 1877, p. 292. Rhyticeros undu- 

 latus, Hume Sf Dav. S. F. vi. p. Ill; Hume, S. F. viii. p. 86; Bingham, S. F. 

 viii. pp. 194, 463, ix. p. 159. 



Description. Male and female. Similar in coloration respectively to the 

 male and female of R. subruficoUis , but differing in being larger, in having 

 the wing differently shaped, the secondaries and tertiaries being nearly as 

 long as the primaries, and in having several ribs or ridges on the sides of 

 both mandibles near the gape. 



The bill and other parts of the bird are similar in colour to those of 

 R. subruficoUis , except that in both sexes the gular pouch has a blackish 

 band drawn across its base, more or less broken in the centre. 



Length 40 inches, tail 12'5, wing 19, tarsus 2*5, bill from gape 8. The 

 female is much smaller: length 35 inches, tail 11, wing 17, tarsus 2*2, bill 

 from gape G'5. 



The Malayan Wreathed Hornbill appears to occur in but few parts of 

 British Burmah except in Tenasserim. In this Division Mr. Davison states 

 that it is common from Arnherst southwards ; and Capt. Bingham obtained 

 it in the Thoungyecn valley. I have not met with it in any part of Pegu; 



