DUTCH BORNEO-EXPEDITION. 247 
as a rule, it ought to be uniform ashy 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 kalulongae. 
Turdinus 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 Bittik. 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 cozisider 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 VM: affine, 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 MM. affine, 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 
Notes from the Leyden Museum, Vol. XXI. 
