494 BUCFROTID/E. 



The female is considerably smaller, the wing being about 16, and the total 

 length about 30 inches ; bill from gape 6-0 ; the casque in this and the next 

 species is small, extending over about half the bill, and is transversely ribbed ; 

 the number of corrugations on the casque varies considerably, sometimes being 

 only two, sometimes as many as five. Young birds at first have the casque 

 smooth. Blyth's Wreathed Hornbill is found locally throughout British 

 Burmah. According to Gates it is spread over the eastern portion of the 

 Pegu division. It is abundant in Tenasserim, from Moulmein to Tavoy, but 

 almost absent in the country south. Invariably seen in large flocks. Breeds 

 in February and March, laying three eggs. Size 2-20 inches x 1-55, pure 

 white. 



1135. Rhytidoceros UndulatUS (Shaw), Elliot, Men. Bucer. 

 pi. xxxv.; Tweed., Ibis, 1877, P- 2 9 2 - Rhyticeros undulatus, Hume and Dav., 

 Str. F. vi. p. iii. ; Hume, Str. F. viii. p, 86; Bingham, Sir. F. viii. pp. 194, 

 463; id,, Str. F. ix. p. 59; Oates, Str+ F. ii, p. 93. Buceros undulatus, 

 Shaw, Gen. Zool. viii. p. 26 ; Buceros pusaran (Raffles), Tick., Ibis, 1864, 

 p. i8o(part). Rhyticeros obscurus (Gm.), Hume, Nests and Eggs Ind. B. 

 p. 115. Rhytidoceros obscurus (Gm.), Salvad., Ucc. Born. p. 85. Aceros 

 plicatus ( ? Lath), Blyth, B. Burm. p. 69. The MALAYAN WREATHED HORN- 

 BILL. 



Similar to Rhytidoceros subruficollis^ but differs in being larger, in having 

 the wing of a different shape, the secondaries and tertiaries being nearly as 

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

 mandible, near the gape. A black band across the gular pouch, more or less 

 broken in the centre. {Oates.) 



Length. 40 inches; tail 12-5 ; wing 19; tarsus 2-5; bill from gape 

 8*0. The female is smaller. Length 35 inches, with a wing of 17, and 

 tail iro. 



Hab. Tenasserim. Recorded also from Arrakan, Chittagong, Cachar, 

 the hill tracts of Eastern Bengal and Assam. Ranges down the Malay Penin- 

 sula, and occurs in Sumatra, Java, and Borneo. Breeds in March. Other species 

 of this genus are R. plicatus from New Guinea and R. narcondami from the 

 Nicobar Islands. Rhytidoceros plicatus is another species said to be got in 

 Arrakan and North Cachar. 



1136. Aceros nipalensis (Hodgs.\ Jerd., B. Ind. i. P . 250; 



Blyth, B. Burnt, p. 69; Gammie, Str.F. iii. p. 209; Elliot, Mon. Bucer. pi. 

 xiv. ; Hume and Dav., Str. F. vi. p. no; Hume, Str. F. viii. p. 86 ; Oates, 

 B. Br. Burm. ii. p. 98. Buceros nipalensis, Hodgs., Calc. Gleanings Set. I. 

 p. 249; id., P. Z. S. 1832. p. 15 ; Tick., Ibis, 1864, p. 182. The RUFOUS* 

 NECKED HORNBILL. 



