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 20 THE CONDOR Vol. XIX 27, 1908, pp. 413-414). Winters irregularly, "south of the Saskatchewan and east of the Rocky Mountains", south to Kentucky, Pennsylvania, etc. (A. O. U. Check-list, 1910, p. 241). HesperiPhona vespertiaa brooksi*, nev subspecies British Columbia Evening Grosbeak Type.--Ma]e; no. 24517, Mus. Vert. Zoo].; Okanagan, British Columbia; N0- vetobet 13, 1913; collected by Allan Brooks. Diagnosis.--Bill thick as in vespertiaa, but longer and hence relatively slenderer; slightly less slender on an average than in californica and warreal, but decidedly thicker than in montana. Color-tone of body of male decidedly the darkest as compared with all the other subspecies; as a result, line of demarca- tion between black cap and hind neck not sharply defined. Frontal yellow bar of male averaging much broader than in any other subspecies except warreal and vespertiaa, and but slightly narrower than in the latter form. Color-tone of body of female darker than in any other subspecies; more sooty on top of head and back, and darker brown beneath; decidedly less ashy about head and on lower surface than in vespertiaa, most nearly as in californica. Summer range.--Not known, but probably west of the Rocky Mountain di- vide, in British Columbia, Canada. The series at hand was taken on various win- ter dates at Okanagan and Chilliwick, B.C., and Tacoma, Washington. Hesperiphona vespertiaa californica, new subspecies California Evening Grosbeak Type.--Male; no. 25638, Mus. Vert. Zool.; Crane Flat, 6300 feet altitude, Mariposa County, California; June 15, 1915; collected by Tracy I. Storer; orig. no. 1257. Diagnosis.--Bill of intermediate degree of relative thickness, more nearly as in brooksi and warred,i; distinctly thicker than in montana. Color-tone of body of male intermediate in depth, much as in vespertiaa though averaging yellowet beneath; in latter respect approaching montana. Frontal yellow bar of male rel- atively narrow, much narrower than in vespertiaa, warreal and brooksi. Col- or-tone of body of female light brownish gray, more brown than in vespertiaa, less blackish on crown and back than in brooksi; near montana, but not quite so yellowish brown beneath; somewhat darker than in warreal. Summer range.--Chiefiy in Sierra Nevada of California, south at least to Yosemite National Park; but also Warner Mountains, Modoc County, and thence north at least to Bear Creek, Wheeler County, Oregon (see L. It. Miller, Condor, w, 1904, p. 104). Winters irregularly in adjacent territory south to Mount Wil- son, Los Angeles County, California. Hesperiphona vespertiaa montana Ridgway Mexican Evening Grosbeak Type.--No. 35150, U.S. Nat. Mus.; from [Miradot, near Vera Cruz], "Mex- ico" (Ridgway, 1874, p. 449 and fig. 4 on pl. 22); male, orig. no. 180; collected by Dr. C. Sartorius; June, 1864. Synonym.--Coccothraustes vespertinus mexicanus Chapman (1897, p. 311); type from Las Vigas, Vera Cruz, Mexico. Diagnosis.--Bill much slenderer than in any of the other forms, with decided curvature downxvard, involving especially the gonys and commissure; the anti- thesis of the condition in vcsperti.na. Color-tone of body of male light, averaging
 * Named in recognition of Allan Brooks's contributions to northwestern ornithology.