KUNGI.. SV. VET. AKADEMIENS HANDLINGAR. MANI) 56. NIO 2. 113 



g Pak Koli u /i 1914. L = 705 mm.; W == 271 mm.; T . 270 mm.; Ii = 125 mm. - ^ Bång Bue 

 Pong 7:, 1914. L = 715 mm.; W = 283 mm.; T == 280 mm.; 15 = 133 mm. — <£ Koli Lak ie / u 191 I 

 L = 730 mm ; W 275 mm.; T = 292 mm.; 15 == 138 mm. - $ juv. Pak Koh 1G /i 1914. L 610 mm.; 

 W = 24G mm.; T = 253 mm.; B = 105 mm. — $ juv. Koon Tan 7 / G 1914. L = 580 mm.; W = 240 mm. 

 T = 225 mm.; B = 88 mm. -- juv. Koon Tan 3 /r, 1914. W ■- 248 mm.; T = 216 mm.; 15 ■ 86 mm. 

 Irides: brown. Bill: yellowish white. Legs: grenish ycllow. 



This curious-looking species is widely distributed and rather common both in ever- 

 green and in bamboo-jungles. It generally goes about in flocks keeping to the trees where 

 it feeds on the fruits, but at one occasion 1 observed a whole party on the ground in a very 

 dense bamboo-jungle. This is probably quite exceptional, because this species and all 

 the other members of the family are arboreal feeding on fruits in the large trees. 



Their no te is very shrill and penetrating and resembles that of a large Wood- 

 pecker. A specimen shot at the neighbourhood of Koh Lak has the inner secondaries 

 tipped with white and the casque is very large but in every other way it agrees well with 

 typical birds. The young specimens have the casque greenish white instead of påle 

 yellow and the black blotch, which is very prominent on the casque of the adult birds, is 

 not visible. 



220. Rhytidoceros undulatus. Shaw. - The Malayan Wreathed Hornbill. 



Bhytidoceros undulatus; Gyldenstolpe II; Gyldenstolpe III p. 232; Muller p. 400; Robinson it Kloss p. 36; 

 Roblnson III p. 733. 



<$ Pa Hing u /i 1914. L = 1080 mm.; W = 510 mm.; T = 353 mm.; Bill from gape = 234 mm. 

 — Irides: påle crimson. Legs: black. 



In the mountainous regions of Northern Siarn the Malayan Wreathed Hornbill 

 was fairly abundant. The noice made by these large birds when flying is still more pow- 

 erful than that made by Dichoceros bicornis Linn. and may be heard for a considerable 

 distance. 



It generally occurs in flocks of about 6 to 8 birds. 



221. Anorrhinus austeni. Jerd. — Godwin-Austen's Hornbill. 



$ Koon Tan */« 1914. L = 655 mm.; W = 288 mm.; T = 289 mm.; Bill from gape = 99 mm. - 

 Irides: brown. Naked skin round eye: blue. Bill: dirty yellow. Legs: brownish grey. 



I only succeeded in obtaining a single female specimen of this rare Hornbill. It 

 was shot out of a small flock among the Koon Tan Hills by my native collector. 



In colouration it is rather similar to A. tickelli Blyth, which has been recorded from 

 Southwestern Siarn where Gairdner met with in the Ratburi and Petchaburi Districts. 

 It, however, differs from that species in having the throat and the sides of the head grey- 

 ish white instead of rufous buff; the secondaries also have no white tips. 



Godwin-Austen's Hornbill has only been found among the Hills of North Cachar 

 and as I have now obtained it among the hills of Northern Siarn it adds a considerable 

 area to its distribution to the south. 



K. Sv. Vet. Akad. Handl. Band 56. N:o 2. 15 



