76 OBERHOLSER, Wew Subspecies of Dendroica. oe 
lower tail-coverts are like the belly. The paler, duller color of the lower 
surface serves to distinguish this species at once from the more richly 
colored grayz. 
It is closely related to WZ. grayz which it probably replaces in the 
region where it occurs. This supposition is based upon the fact 
that among the considerable series of grayd before me from various 
parts of Mexico not one is from the State of Tamaulipas, while 
the present species is unrepresented among the considerable series 
of that bird from the neighboring State of Vera Cruz. 
’ DESCRIPTION OF A NEW SUBSPECIES OF DEJ- 
DROICA. 
BY HARRY C. OBERHOLSER. 
A RECENT careful examination of the series of Yellow Warblers 
contained in the United States National Museum has revealed the 
existence of a well-defined geographical race of Dendroica estiva, 
which has hitherto been recognized only in synonymy. The 
subspecies in question should, therefore, now be known as 
Dendroica zstiva rubiginosa (/a//as), subsp. restit. 
ALASKAN YELLOW WARBLER. 
Motacilla rubiginosa PALLAS, Zoogr. Rosso-Asiat. I, (1811?) 1831, 496.’ 
Cuars supsp.— D. aestivae morcomo sat similis, sed corpore supra 
olivaceo-viridi obscuriore fere unicolore, vertice et uropygio vix flavescentt- 
1 All other of the numerous synonyms of Dendroica e@stiva apply with 
reasonable certainty to the eastern form. The bird which Pallas described 
(/. c.) was from Kadiak Island, Alaska, and is fairly well characterized in 
his diagnosis, the essential portions of which are herewith presented, 
italicized as in the original: 
“« Motacilla rubiginosa. 
M. flavissima, . . . pectori lituris longitudinalibus rufis, -rectricibus 
flavis fusco marginatis. Vibrissae narium et /rvozs ad medium usque 
verticem, lateraque capitis et swbtws avis tota citreo-flava; frons virescenti 
nebulosa. . . . Cervix cum dorso uropygioque virescit.” 
