500 OCYCEROS TICKELLT. 



Darling records that in the adult male the bill is yellowish 

 white, a little browner on the casque, with a patch of saffron 

 or orange yellow at the base of the lower mandible on either 

 side, and with generally a small dusky patch at the tip of the 

 lower mandible, at times running as a narrow band backwards 

 along the commissure. In the female, the bill is brownish 

 black ; sometimes a sort of chocolate dusky. 



In both sexes the irides are bright brown ; but in one female 

 they were black ; the legs and feet brownish black ; the 

 claws horny black ; the orbital skin and that at base of 

 lower mandible bluish white or blue, the latter not unfrequently 

 pink, and sometimes part of the former also is the same 

 colour. 



The colours of the soft parts, as recorded by Davison and 

 Bingham (VI., 104) should also be referred to, as no two persons 

 quite agree about colours. 



Besides the differences in the colours of the bills, and in 

 size, already pointed out, the males and females differ further, 

 in that the former have the chin, throat, sides of neck, entire 

 lower surface of body, tibial plumes and lower tail-coverts, 

 a bright, warm, somewhat ferruginous rufous, while in the 

 female these parts are a grey earthy brown, only partially 

 tinged or overlaid with a dull ferruginous rufous. 



In the male, the white tippings to the tail-feathers are much 

 deeper than in the female, and in the former some or all of 

 the primary greater coverts are tipped with white, which is not 

 the case in the female; the white tippings to the quills, which 

 often in the male extend to the tertiaries, are much less marked 

 in the female, and are commonly confined to the earlier 

 primaries. 



Darling says : — 



" This bird, of which I got twelve* — six males and six females 

 — I met with on the Thoungyah Hills, some 15 miles from 

 Kaukaryit, ou the way to the Yahine Territory, vi& 

 Meawuddee. 



" I noticed them once half way between Kaukaryit and 

 Thoungyah. I found them very shy, and very hard to get 

 close to ; they were always in heavy forest, and the way they 

 found out a man's approach, although stalked in a perfect 

 native fashion, was something marvellous. They announce 

 their whereabouts by an incessant cackling, which they 

 always seem to keep up when feeding, but when any danger 

 is seen, a shrill scream is given, and away they go, one after 

 the other in a string ; they do not seem to fly far, but settle 



* He only recorded the measurements of ten. 



