DUTCH BORNFO- EXPEDITION. 247 



as a rule, it ought to be uniform asLy white. — Iris red 

 or reddish brown, bill horny gray, feet bluish gray. 



Hab. Malay Peninsula, Sumatra and Borneo, where it 

 seems to have a general distribution, as it is recorded 

 from the South (by Grabowsky), from Laboean and from 

 Sarawak. It seems to be a lowland species, but reaching 

 up to 1000 feet on Mount Mulu (see Sharpe, Ibis 1894, 

 p. 542). 



206. Malacopteron halulongae. 



Tiirdinm kalulongae Sharpe, Bull. Br. Orn. Club, N°X, p. 54(1893); 



id. Ibis 1893, pp. 548 and 568; id. id. 1894, p. 542. 

 Malacopteron kalulongae Biittik. N. L. M. 1895, p. 106. 



An adult male from Mount Kenepai and another from 

 Mount Liang Koeboeng. Obtained in the undergrowth of 

 the mountain-forest. — Iris gray, bill gray, lower mandible 

 whitish, feet grayish blue. 



Hab. The mountain-regions of Sarawak and Central 

 Borneo. Dr. Sharpe recently separated this species from 

 M. magnirostre on ground of its dark crown and the want 

 of dusky streaks on the throat. I may not neglect to say, 

 however, that only in the specimen from Mount Kenepai 

 the throat is entirely unstriped, while in that from Mount 

 Liang Koeboeng the longitudinal dusky streaks on the 

 throat, so characteristical in M. magnirostre, are rather 

 distinct, so that our species differs in fact from M. magni- 

 rostre only by the blackish crown. At the first glance 

 one might be inclined to consider the specimen from Mount 

 Liang Koeboeng as a valid different species on account of 

 its striped throat, but the same peculiarity being found in 

 the most closely allied M. arfine, I consider it more reason- 

 able to unite both birds under one and the same species. 

 In fact there are amongst the great number of sooty brown- 

 crowned M. af/ine, which I collected in Borneo, many 

 specimens with the throat plain white, while in others 

 the throat is more or less distinctly striped with gray. 

 These stripes cannot be ascribed either to the sex of the 



JVotes Iroioi tlie Leyden Museum, ^'ol. XXI. 



