392 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



On Doi Suthep I observed it in small bands, almost always accompan- 

 ied by Gampsorhynchus, in dense thickets and low trees along small 

 streams or at the edge of overgrown clearings. While the members 

 of the flock explore the vines and branches they constantly utter a 

 low double whistle but, when frightened, give vent also to a harsh 

 chur-chur and other discordant notes. 



On Phu Kha at about 4,000 feet, April 7, 1936, I discovered a nest 

 containing three immaculate white eggs. This nest was a domed struc- 

 ture with a large opening on the only exposed side, made externally 

 of coarse grass but lined with much finer grass, sunk into a hollow 

 of the ground on a steep, stony slope overgrown with thin bamboo. 

 The eggs, which were heavy-set, were taken after dark, together with 

 the incubating female. 



Adults in postnuptial molt have been collected on Doi Suthep be- 

 tween August 24 and October 27. 



A male had the irides yellowish pink ; the eyelids slaty ; the bill ver- 

 milion, with the narial membranes blackish ; the feet and toes brown- 

 ish olive ; the claws light horny brown. 



This species has the entire upperparts ochraceous-brown, brighter 

 on the head and nape; a white supercilium; the lores and feathers 

 immediately below the eye black ; the ear coverts deep brown ; the un- 

 derpays white, washed on the flanks with ochraceous ; the under tail 

 coverts olivaceous-brown. 



POMATORHINUS FERRUGINOSUS ALBOGULARIS Blyth 



Tenasserimese Coral-billed Scimitar Babbler 



Plomatorhinus] albogularis Blyth, Journ. Asiat. Soc. Bengal, vol. 24, 1855, p. 274 



(Mount Muleyit). 

 Pomatoihinus ferruginosus marlae, Riley, Journ. Siam Soc. Nat. Hist. Suppl., 



1933, p. 156 (Doi Langka) ; U. S. Nat. Mus. Bull. 172, 1938, p. 325 (Doi 



Langka). 



The only record for this bird in Thailand is based upon two speci- 

 mens taken by Smith on Doi Langka, April 23 and 25, 1931. 



The example of April 25 has not yet completed the postnatal molt. 



The adult has the entire upperparts olivaceous-brown, the crown 

 and nape somewhat deeper in color; the lores and a supercilium ex- 

 tending to the nape white, narrowly edged above with black ; the ear 

 coverts and sides of the neck black ; the throat white, changing to pale 

 rufous-buff on the remaining underparts, this color suffused with 

 blackish at the extreme sides of the breast and with olivaceous-brown 

 on the flanks and under tail coverts. The juvenile differs only in its 

 generally more rufous coloration. 



P. f. mariae, apparently described without knowledge of Blyth's 

 name, is almost certainly a synonym. 



