_Alauda chrysolæma_, WAGL. Isis, 1831, 350.—BONAP. P. Z. S. 1837, 111. _Otocorys ch._ FINSCH, Abh. Nat. 1870, 341. _Alauda minor_, GIRAUD, 16 Sp. Tex. B. 1841. _Alauda rufa_, AUD. Birds Am. VII, 1843, 353, pl. ccccxcvii. _Otocoris r._, HEERM. X. s, 45. _? Otocorys peregrina_, SCL. P. Z. S. 1855, 110, pl. cii. _Eremophila p._, SCL. Cat. Am. B. 1860, 127. CHAR. _Adult._ Frontal crescent less than half as wide as the black. Throat and forehead deep straw-yellow; pinkish tints above deep cinnamon. _a._ Specimens from California and Mexico, streaks on back, etc., very obsolete; darker central stripe to middle tail-feathers scarcely observable; white beneath. _Measurements._ (3,507, ♂, Tonila, Mexico,) wing, 3.80; tail, 2.75; bill, .53—.15—.42. (9,115, ♂, Mexico,) ” 4.10; ” 2.90; ” .63—.13—.50. (3,939, ♂, California,) ” 3.85; ” 2.75; ” .56—.14—.45. (58,582, ♂, Gt. Salt Lake City,) ” 4.10; ” 2.80; ” .62—.16—.32. _b._ Specimens from coast of Oregon and Washington Territory. Streaks on back, etc., very conspicuous; dark central stripe of tail-feathers distinct; yellow beneath. _Measurements._ (8,734 ♂, Fort Steilacoom,) wing, 3.75; tail, 2.60; bill, .61—.15—.40. HAB. Middle America, from the desert regions of the southern Middle Province of North America, south to Bogota. HABITS. Assuming the Shore Lark of the Labrador coast and the rufous Lark of the Western prairies to be one and the same species, but slightly modified by differences of locality, climate, or food, we have for this species, at all times, a wide range, and, during the breeding-season, a very unusual peculiarity,—their abundant distribution through two widely distant and essentially different regions.