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54
BULLETIN 50, UNITED STATES NATIONAL MUSEUM.
KEY TO THE SPECIES AND SUBSPECIES OF DYSITHAMNUS.
a. Pileum and hindneck at least partly slate color or slate-gray. (Adult males.)
- b. Pileum and hindneck without black or white markings.
- c. A narrow white spot or streak on lower edge of auricular region. (Southwestern Brazil; Bolivia?)
'Dysithamnus affinis, adult male (extralimital).[1]
- cc. No trace of white spot or streak on lower edge of auricular region. (Dysithamnus mentalis.)
- d. Under parts of body more deeply yellowish, strongly and abruptly contrasted with grayish white of throat. (Southeastern Brazil; Paraguay.)
- cc. No trace of white spot or streak on lower edge of auricular region. (Dysithamnus mentalis.)
Dysithamnus mentalis mentalis, adult male (extralimital).[2]
- dd. Under parts of body paler yellowish (sometimes white).
- e. Abdomen more or less yellowish; back more or less olivaceous, different from color of pileum and hindneck.
- f. Larger (wing 63.5-66.5).
- g. Paler. (Tobago.)
- f. Larger (wing 63.5-66.5).
- e. Abdomen more or less yellowish; back more or less olivaceous, different from color of pileum and hindneck.
- dd. Under parts of body paler yellowish (sometimes white).
Dysithamnus mentalis oberi, adult male (extralimital).[3]
- gg. Darker. (Colombia and Venezuela.)
Dysithamnus mentalis semicinereus, adult male (extralimital).[4]
- ff. Smaller (wing 57-62). (Panama to Guatemala.)
Dysithamnus mentalis septentrionalis, adult male (p. 55).
- ee. Abdomen white; back slate color, concolor with pileum and hindneck.
- f. Lighter and clearer slate color above, more extensively white beneath, the flanks paler and less olive or buffy brownish. (Trinidád.)
- ee. Abdomen white; back slate color, concolor with pileum and hindneck.
Dysithamnus mentalis andrei, adult male (extralimital).[5]
- ↑ Dysithamnus affinis Pelzeln, Orn. Bras., ii, Abth., 1869, 80, 149 (Villa Maria, Brazil; coll. Vienna Mus.). — D[ysithamnus] a[ffinis] affinis Hellmayr, Novit. Zool., xiii, Feb., 1906, 32, in text (crit.); Dysithamnus affinis affinis Hellmayr, Novit. Zool., XV, 1908, 69 (Faz. Esperanza, Brazil; crit.). — Dysithamnus olivaceus (not Thamnophilus olivaceus Tschudi) Sclater, Cat. Birds Brit. Mus., xv, 1890, 222, excl. syn. part. — Dysithamnus mentalis (not Myothera mentalis Temminck) Allen, Bull. Am. Mus. N. H., V, 1893, 118, excl. syn. (Chapada, Matto-Grosso, Brazil; crit.).
- ↑ Myothera mentalis Temminck, Pl. Col., ii, livr. 30, Jan., 1823, text to pl. 179, fig. 3 (Brazil; coll. Vienna Mus.). — Daysthamnus mentalis Burmeister, Syst. Ueb. Th. Bras., iii, 1856, 82. — Dysithamnus mentalis Sclater, Proc. Zool. Soc. Lond., 1858, 221, part; Cat. Birds Brit. Mus., xv, 1890, 221; Allen, Bull. Am. Mus. N. H., ii, 1889, 250. — D[ysithamnus] mentalis mentalis Hellmayr, Novit. Zool., xiii, Feb., 1906, 32, in text (crit.). — M[yiothera] poliocephala Maximilian, Beitr. Naturg. Bras.,' iii, pt. ii, 1831, 1098 (s. e. Brazil; type now in coll. Am. Mus. Nat. Hist.)
- ↑ Dysithamnus mentalis oberi Ridgway, Proc. Biol. Soc. Wash., xxi, Oct. 20, 1908, 193 (Tobago; coll. U. S. Nat. Mus.).
- ↑ Dysithamnus semicinereus Sclater, Proc. Zool. Soc. Lond., 1855, 90, 147, pl. 97 (Bogotá, Colombia; coll. P. L. Sclater); Cat. Birds Brit. Mus., xv, 1890, 221, part. — D[ysithamnus] mentalis semicinereus Ridgway, Proc. Biol. Soc. Wash., xxi, Oct. 20, 1908, 193, in text.
- ↑ Dysithamnus affinis andrei' Hellmayr, Novit. Zool., xiii, Feb., 1906, 31 (Caparo, Trinidád; coll. Tring Mus.). — Dysithamnus mentalis spodionotus (not D. spodionotus Salvin and Godman) Chapman, Bull. Am. Mus., N. H., vi, 1894, 50 (Trinidád).
