Journal of the Federated Malay States museums - Sabrizain.org

30 Journal of the F.M.S. Museums. [Vol. VI»
having a slight rufescent tinge. On the under-surface the
breast-band, light olive-brown in colour, is much broader,
extending over the chest to the abdomen and flanks, and the
white throat patch is less clear, being slightly washed with the
colour of the chest and sides of neck, while the lower abdomen
is pale ivory yellow.
The bill, as compared with that of R. pectoralis, has the
upper mandible slightly less keeled and the lower is pale, not
blackish.
Length of wing, 80 mm; tail, 61; tarsus 16.7; bill from
gape, 20.5.
Dr. E. Hartert, who has examined the two individuals
from Tampin (an adult and a slightly immature female) has
kindly sent us the following remarks " : The new form
resembles much more the large-billed Rh. colonics, Hartert, from
Sula Mangoli and Rh. nicobaricia from the Nicobars (than
R. pectoralis). It differs, however, from Rh. colonits chiefly in
the tail, which is brown and not chestnut rufous, and from
Rh. nicobarica also in the less rufescent edges to the rectrices,
somewhat more olivaceous back and rump and a little darker
chest-band. It agrees with both the latter in the lower
mandible being light in the adult birds.'' In these two
individuals the abdomen lacks the yellow tinge of the male.
Type: Adult male, Genting Bidai, Selangor-Pahang
Boundary, Malay Peninsula, 2,300 ft. 19th September 1914,
F. M. S. Mus. No. 157/14.