56 GYLDENSTOLPE, BTRDS COLLECTED BY THE SWEDISH ZOOLOGICAL EXPEDITION TO SIAM. 



species also keeps in high trees and is therefore rather härd to get, especially as it is 

 at the same time very wary. Tlie casqiie seems to vary very much and differs in 

 sliape in every specimens obtained. 



The flight is, unlike that of the larger Hornbills, completely silent. 



J" V2 1912 Bång Hue Hom. $ -'V-. 1912 Bång Ilue Hom. 



Wing = 256 mm. Wing = 243 mm. 



Tail =278 » Tail =265 ^ 



(^ 73 1912 Meh Lem. 

 Wing — 271 mm. 

 Tail =282 » 



114. Rhytidoceros subruficoUis Blyth. — Blyth's Wreathed Hornbill was 

 more eommon in the northern districts than Dichoceros hicornis L. but occurred 

 together with that species. 



In the southern primeval forests as for instance in the Chantabon province I 

 never observed a single specimen of Rhytidoceros subruficoUis Blyth. though the 

 conditions of life seemed to be the same here as in the North. 



In the great forests round Meh Lem it was, however, the most eommon Horn- 

 bill. This bird also makes a considerable noice when flying but the flight is not so 

 undulating as that of Dichoceros hicorriis L. 



F{im. Upupida^. 



115. Upupa epops indica Reichenb. — The Indian Hoopee, which is a mera 

 subspecies of our eommon U}nipa epops L. was sparsely distributed över such districts 

 in Siam as are overgrown with more open and parklike forests. 



In the real tropical evergreen forests it was never seen or heard, but on the 

 Korat plateau and in the neighbourhood of Den Chai and Pak Pan with its dry 

 forests it was plentiful and often met with. 



A female shot at Sakerat on the 19th of January lias a length in fresh skin 

 of 250 mm., wing = 131 mm. and tail = 96 mm. 



This subspeeies inhabits India east to Southern China and Hainan. 



Faiii. Cypselid.T. 



116. Chaetura gigantea indica Hume. — Only found along the small Meh 

 Lem river in the valley of which several birds of this species were observed towards 

 dusk, flying with extreme rapidity. 



A female shot at this locallty on the lOth of March meaaures as follows: 

 Length = 230 mm., Wing=196 mm., Tail = 64 mm. 



