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May, t9or [ THE CONDOR 65 The Pacific Coast Yellowthroats. BY JOSEPH GRrNNELL. Geothlypis trichas scirpicola--new subspecies. TULE' YELLOWTHROAT. SuBSP. CHAR.--Similar to Geothlypis lrichas occidentalis, but brighter colored and larger throughout, with especially longer tail. Twenty-five males from the Pacific slope of Los Angeles County measure in inches: Wing, 2.?8 (55 min.) to 2.37 (6o. 3 ram.) averaging 2.25 (57 ram.); tail, 2.22 (56 min.) to 2.52 (64 min.) averaging 2.35 (60 min.). Prevalent primary formula in unabmd- ed specimens, 4-3-5-2-6-r-7-8 or 4-3-2-5-?-6-7-8. TYPE--? ad.: No. 2217, Coll. J. G.; E1 Monte, Los Angeles County, California; March 20, ?897: Collected by J. Grinnell. HABra'?a'--Permanently resident in the fresh-water rule beds of the southern coast district of California. Geothlypis trichas sinuosa--new subspecies. SALT MARSH YELLOWTHROAT. SuBSP. CHaR.--Similar to GeolhlJ/pis lrichas occidenlalis, but dorsally and laterally darker in color, and size much les?. Thirteen males from the marshes of San Francisco Bay measure: Wing, 2.02 (5? min.) to 2.?5 (54.6 min.) averaging 2.?o (53 min.); tail, 2.08 (52.6 min.) to 2.23 (56.6 min.) averaging 2.?6 (55 min.). Prevalent prinmry formula in unabraded specimens, 4-3-2-5-?'6-7-8 or 3-4-2-5-?-6-7-8. TYPE--(? ad.; No. 427 o, Coil. J. G.; Palo Alto, California; May 3 ?, ?9oo; collected by J. Grin- nell. HaBrTa?e--Permanently resident about the salt marshes of San Francisco Bay and vicinity. RE?ARKS--A third form occurs abundantly in parts of California during the spring and fall migrations. It appears at Pasadena during the latter part of April, often after the resident yellow-throats are caring for nearly fledged young. This migratory race is evidently .the form summering on the Pacific slope from Central California to British Columbia, and has been named Geolhlypis trichas arizela by Oberholser (Auk XVI, July ?899, p. 257). The birds obtained at Pasadena in April, were found in the brush along the foothills far from water, and were in company with the Tolmie, Townsend, Calaveras and Pileolated Warblers, Warb- ling Vireos, Western Flycatchers and many other migrating species. The speci- mens secured are somewhat smaller than scirpicola and occidentalis and yet consid- erably larger. than sinuosa, their average measurements being: Wing, 2.?8 (55 mm.); tail, 2.28 (5 8 ram.). The wing is more pointed than in either of the others, the primary formula being 2-3-4-5-?-6-7-8 or 3-2-4-5-?-e-7-8. .4rizela, therefore, is the migratory race, moving south in winter toLower California, Sinaloa and Tepic (fide Oberholser, 1. c.). I find it difficult on account on the variations due to age and season to assign color characters to any of our Yellowthroats. Scirpicola is the brightest and deep- est colored of all, the yellow of the under parts being more extended posteriorly and having a hint of an orange tint, while the upper parts are brighter brown or green according to age or wear; in these respects, as well as in size, showing a pronounced tendency toward beldin?siof Lower California. Occidentalis, as judged from Arizona examples, is palest, while the diminutive sinuosa is decidedly the darkest. The width of the frontal black and vertical white bands varies indiffer- ent individuals, but as a rule it is narrowest in arizela and sinuosa. It is of interest to note the correspondence in characters of certain bird races occurring on the marshes of San Francisco Bay a?d on those of Southern Cali- fornia. The former locality produces the small ?/[elospiza melodia pusillula, ,4m-