Oisr?3'^ PROCEEDINGS OFTHE BIOLOGICAL SOCIETY OF WASHINGTON r ANNAM.. Rock leftYunnanearly in1939 andsettledinDalat, southern Annam, where he has been makingbird collections forthe U.. S
Trang 1H Oisr?3
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PROCEEDINGS
OFTHE BIOLOGICAL SOCIETY OF WASHINGTON
r
ANNAM.
BY J. H RILEY.i
On account of war conditions in China, Dr Joseph F Rock
leftYunnanearly in1939 andsettledinDalat, southern Annam,
where he has been makingbird collections forthe U. S.National
Museum The first consignment of specimens contains some
very interesting forms, among which may be mentioned Otus
senegalensis distans and Crodas langhianis The following five
formsare believed to be worthyofseparation and are herewith
described
PericrocotusSolarisdeignani, subsp nov
Type.—Adult female, U S. National Museum, No 358855, Langbian
Peaks,2160meters.SouthAnnam,June, 1939
Similarto Pericrocotus Solarisnassovicus Deignanofsoutheastern Siam,
butthe throat grayish white withouta yellowwash;theremainderofthe
lower-parts a lighter, clearer yellow; the back and lesser wing-coverts
warbler green insteadofneutralgray;headand neck abovealightergray
Wing,84;tail,80;culmen, 13.
Male SimilartothesamesexofPericrocotus Solaris nassovicus, butthe
throat without the yellow wash and the lower parts on the average less
intense orange
Remarks.—This form isfoundeduponthetypeandfive males taken in
the mountains of southern Annam in the vicinity of Dalat Named in
honorofMr HerbertG Deignan
Pomatorhinusochraceicepsalius,subsp nov
Type.—Unsexed, U S. National Museum, No 359059, Dran, 3000 ft.,
SouthAnnam, July, 1939
Similar to Pomatorhinus ochraceiceps ochraceiceps, but the tail darker
above, the black area at the tip more extensive and extending further
1Published withthe permiasion of the Secretary of theSmithsonianInstitution.
11—Proc.Biol Soc. Wash., Vol 53 1940 (47)
APR J85 t9W
Trang 2towardsthebaseofthefeathers;thetailbeneatheven hasthe blackmore extensive,verylittlebrownshowingexceptatthe baseandanarrowborder
at thetip. Wing,97;tail, 109; culmen, 35.5mm.
Remarks.—Dr Rock only tookthesingle specimen It hasbeen com-pared with five males and two femalesfrom northern Siam Six of the
latter (four males and two females), measure: wing, 87-97 (92.5); tail,
101-118 (113.9);culmen,29-34 (32.2)
Leioptilaannectenseximia, subsp.nov
Type.—Adultfemale, U S. National Museum, No 359014, Forests of
Cam-ly,5300feet. SouthAnnam,July, 1939
SimilartoL.a.saturata,butthebackblack;thecrissumandrumpdeeper
in color andthelatter restricted inareanot extending ontothe backor wingcoverts;ameretrace ofconcealedbrowninthe scapulars;thewhite streaksonthehind-neck obsoleteand hardlynoticeable;thewhitetipsto thetailfeathers morerestricted;afewwhitebarbsto the feathersof the
supra-loral region and a few smallwhite feathers on the upper eye-lid;
longeruppertail-coverts black Wing,78;tail,86;culmen, 15.5mjn Remarks.— Thepresentform has beencompared witheleven specimens
of Leioptila annectens saturata from northern Siam No specimens of Leioptilaannectensdavisoni have beenavailable forcomparison Judging fromdescriptions,itmustbe veryclose,butitcanhardlybethesame, being confinedto Mt Muleyit,Tenasserim
Anthipessolitariaeuroa, subsp nov
Type.— Multmale,U.S.NationalMuseum,No.359196,Dran,3000ft.,
SouthAnnam, July, 1939
SimilartoAnthipessolitariasubmoniliger, butdarker above, the outside marginsoftheremigesandrectricesabrighter,redderbrown (nearrusset
insteadofsnuffbrown) Wing,64;tail,46;culmen,12.5.
Remarks.—Three specimens were taken at the type locality by Dr Rock; onesexed as a female, the others unsexed, butclearlymales The
U.S.NationalMuseumhasa femalecollectedbyC.BodenKlossatDalat,
4500feet, SouthAnnam. For comparison onlya male fromtheRaheng District,Siam,hasbeenavailable forcomparison Thesexes oftheAnnam seriesare quiteuniformanddifferasdescribedfromtheSiamesemale
Tribura idonea,sp. nov
Type.—Adult male, U S. National Museum, No 359220, Forests of
Cam-ly, westof Dalat, 1600 meters, SouthAnnam, June, 1939
SimilartoTribura taczanowskia,butmuchdarkerabove(Front'sbrown); throatwith smallroundblackspots;wingshorter;taillonger
Description.— Above Prout's brown, including the outer aspect of the wings; auricular region slightly lighter than the back; a narrow white
supra-loral streak;throatwhitewithsmallroundblack spots;breast and
Trang 3Riley—Five New FormsofBirds from Southern Annam. 49
Baccardoumber; undertail-coverts tawny-olive, the longer ones saccardo
umbertipped with whitish; tail above olive brown with a grayish cast;
tailbelow deepmousegray,theshafts similar Wing,50;tail,62.5;culmen,
10.5; tarsus, 18;middle-toeandclaw, 17.5mm.
Remarks.—Onlythetypetaken,abreeding birdwith thetailmuch worn
at thetip. The tail would probably have measured morein an unworn state All the measurements, except the tarsus, are smaller than those givenby Hartert (Vogel palaark Fauna, I, heft5, 1909, 542)for Tribura taczanowskia Only a single male of the latter has been available for
comparison
A good series of Tribura luteoventris has been examined Dumeticola thoradca does not belonginthegenusTribura,inmyopinion