Descriptions of two new birds from Trong, lower Siam

Vol. XV, ^{pp. 157-158} June 25, 1902

PROCEEDINGS

OFTHE

BIOLOGICAL SOCIETY OF WASHINGTON

DESCRIPTIONS OF TWO NEW BIRDS FROM _TRONG, LOWER SIAM.*

BY CHARLES W. RICHMOND.

Among

^{the birds collected}

by

^Dr.

W.

L.

Abbott

in the province ^ofTrong,

Lower

_Siam,

and

forwarded to the

U.

S.

National

Museum,

^are

^two

apparently

new forms which

arehere described.

The

first, a species of Stachyris,

was

sentfor deter- mination to Dr. R.

Bowdler

_Sharpe,

who

considered it

new and

nearly related ^{to S.} clirysma.

The

^latter _species ^is not _repre- sented in the

Museum

collection, hencea direct comparison ^lias not been made.

*

Stachyris chrysops

new

species.

Type.

—

Adult _male, No. 1G0,.566, U. S. National Museum, summit of

Khow Nom

Plu, 3000 feet, Trong, Lower Siam, February ^22, 1897,Dr.

W.

L. Abbott. Nape,back, scapulars, outer margins ^of wing and ^tail

feathers, upper tail-coverts and rump, brownish ^olivegreen, paler and more _jellowish on the latter; forehead, orange-ochraceous; crown and occiputochre_yellow, streaked with _black; lores and a narrow rictal streak, black; throat, breast,abdomen, ^andbendof wing,ochre_yellow, deeper on ^the throat; imder tail-coverts, sides of body, ^{sides of} neck and ear-coverts, brownish

wax

yellow; under wing-coverts, axillaries,

*Publishedbypermission^ofthe Secretary^oftheSmithsonianInstitu- tion.

29-BlOL. SOC. WASH. VOL. XV, ^1902. (157)

158

mchmond —

iVe^c

Birds from

Trong.

and inner margins ^of wing feathers, pale Naples yellow; ^tail grayish olive green; wingfeathers grayish black.

Length(inthe flesh), 121

mm.;

_wing(in skin),50

mm.;

tail, 47; tar- sus, 18.5; culmen, 12_(bill, from_{gape, 15).}

"Iris red; feetyellowishbrown; upper mandible ^black; lowermandi- bleleaden,pink ^atbase."

Oreocincia horsfieldi affinis

new

subspecies.

TV^e.—^Adult male. No. _169,982, U. S. National Museum,

Khow Nok Ram,

³⁰⁰⁰feet,Trong,LowerSiam, January^13, 1899, Dr.

W.

L. Abbott.

Similar to 0. horsfieldi, but has a smaller _bill, longer wing, somewhat brightercolors, ^ismore_heavily mottledabove, andhas a difl'erentwing formula. According ^to Seebohm the "second primary ^is intermediate inlengthbetweenthefifthand_{sixth, or} sixth and seventh" in 0. hors- fieldi*,which statement_agreeswitha specimen^intheNational

Museum

collection; the fourthand fifthprimaries are equal and_longest. In the

new

formthesecond primary ^fallsbetween the third and fourth, with the third_longest, thus_agreeingwith 0. varia.

Length (in flesh), 267

mm.;

wing, 142; tail,93; tarsus, 34; culmen, 23_(bill,from_{gape, 30.5): "Iris,} dark brown; feet, pale brownish _fleshy;

bill, dark horny brown,palefleshybeneath atbase."

The

_wingof 0. horsfieldi ^is given ^{as 138}

mm.

(Sundevall, Journ. ^fiir Orn.,1857, 161), and from 133.5 to 137

mm.

_(Seebohm, Catal. Birds Brit. Mus., V. 153).

*Catal.BirdsBrit. Mus., V, ^153.