4 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 134 
Another peculiarity is its suffusion of pinkish buff, which affects the 
throat, the ground color of the under parts, and the tones of the crest 
and upper parts, but a similar suffusion appears in slight degree also 
in some skins of henrici from western Thailand. In the circumstances, 
and because of the specimen from Doi Ang Ka discussed above, 
griseiceps seems to be properly placed in the species pallidus. 
Criniger pallidus isani, subsp. nov. 
Type.—U.S.N.M. No. 459700, adult male, collected at Ban Muang 
Khai (lat. 17°30’ N., long. 101°20’ E.), Loei Province, Thailand, on 
January 14, 1955, by Robert E. Elbel; original number RE 4470. 
Diagnosis —Nearest Criniger pallidus henrici, from which it is 
separable by having the olivaceous brown of the mantle decidedly 
paler and grayer. 
Range.—Eastern Thailand (Loei and Phetchabun Provinces). 
Remarks.—Although no representative of the genus had previously 
been reported from the Phaya Dong Fai Mountains, I have recently 
acquired no fewer than 24 specimens of this new race from several 
localities in the northwestern portion of the eastern plateau of Thai- 
land, and the bird will certainly be found to possess a much more 
extensive range. 
Criniger pallidus annamensis DELACoUR AND JABOUILLE. 
Criniger tephogenys annamensis DeELacour AND Jaxourtie, Bull. Brit. Orn. 
Club, vol. 45, No. 291, December 5, 1924, p. 32 (Lao Bao, Quangtri Province, 
Annam). 
Range.—Central Annam, intergrading in northern Annam (Phu 
Qui) with henrici, and in south-central Annam (Dak To, Kontoum) 
with the next following race; central Laos, from Chiang Khwang 
southeastward to Lao Bao. 
Criniger pallidus khmerensis, subsp. nov. 
Type—U.S.N.M. No. 360999, adult male, collected at Banteai 
Srei (lat. 13°16’ N., long. 104°07’ E.), Siem Reap Province, Cam- 
bodia, in January 1940, by Joseph F. C. Rock; original number 1292A, 
Diagnosis.—Nearest Criniger pallidus annamensis, but separable by 
the brighter, more purely yellow (less buff-suffused) under parts and 
the much more golden-olive (less brownish-olive) mantle. 
Range.—Southern Annam (Phanrang and Haut-Donai Provinces), 
Cambodia, and southern Laos (Saravane Province). 
Remarks.—Criniger pallidus khmerensis seems to be sympatric in 
southern Annam with Criniger ochraceus subsp. nov. (named just 
below). 
