BIRDS OF NORTH AND MIDDLE AMERICA 429 



through on the lower back, tail crossed by five or six broad black 

 bands, the outermost rectrix with four narrow, irregular, oblique black 

 bands and broadly blackish sub terminally, the ashy mouse gray areas 

 much mottled with blackish on the inner web; chin and upper throat 

 ashy avellaneous; the lower throat and breast dark, the feathers be- 

 coming hair brown faintly mottled with fuscous terminally; abdomen, 

 sides, and thighs whitish more or less washed with pale ashy avella- 

 neous, especially on the middle of the abdomen; a few fuscous-black 

 spots or blotches on the upper thighs and lower abdomen; flanks and 

 under tail coverts whitish barred with fuscous-black; under wing 

 coverts white, those near the bend of the wing washed lightly with 

 dirty avellaneous. 



Natal down. — Not known. 



Suhadult mah.—Vs'mg 423-430; tail 364-380; culmen 33; tarsus 

 104-108; middle toe without claw 41.5-44 mm.''' 



Adult Jemale.—Wmg 457-461; tail 382-385; culmen from cere 

 30-37.5; tarsus 107-118; middle toe without claw 51-55 mm.'^ 



Immature female. — Wing 477-491; tail 410-425; culmen from cere 

 36.5-38; tarsus 120-125; middle toe without claw 53-63 mm.'^ 



Range. — Resident in rain-forest areas from Perme, Panama, and 

 Rio Truando, Colombia, to British Guiana (Mazaruni River) south 

 to upper Amazonia (Barra do Rio Negro, Piquiatuba, Para; Lago do 

 Manqueri), and eastern Ecuador (Sarayacu, San Jose de Sumarco), 

 to Bolivia (Todos Santos, Cochabamba). Apparently rare (or hard 

 to find) throughout its range. 



Type locality. — Sarayacu, Ecuador. 



Morphnus guianensis (not Falco guianensis Daudin) Pelzeln, Journ. fiir Orn., 

 viii, 1860, 337; xi, 1863, 131, part (plumages); Verb. Zool.-bot. Wien, 1862, 

 167, part. — Cassin, Proc. Acad. Nat. Sci. Philadelphia, 1860, 132 (Truando 

 River, Colombia). — Wied, Journ. fiir Orn., xi, 1863, 1 (juvenal and other 

 plumages). — Ridgway, Bull. U. S. Geol. and Geogr. Surv, Terr., ser. 2, 

 No. 2, 1876, 149 (monogr.; Rfo Truando, Colombia). — Salvin and Godman, 

 Biol. Centr.-Amer., Aves, iii, 1900, 88, part (Rfo Truando, Colombia). — 

 Chubb, Birds Brit. Guiana, i, 1916, 252 (Mazaruni River, Brit. Guiana). — 

 Lehmann, Caldasia, ii, No. 7, 1943, 165, part (syn.; meas.; plum.; crit.; spec, 

 ex Colombian localities). 



Morphnus taeniatus GvRNEY, Ibis, 1879, 176, in text, pi. 3 (Sarayacu, e. Ecuador; 

 coll. Salvin and Godman; orig. descr.; col. fig.); List Diurn. Birds Prey, 

 1884, 45. — Pelzeln, Journ. fur Orn., xxvii, 1879, 263 (crit.). — Reichenow 

 and ScHALOw, Journ. fiir Orn., xxviii, 1880, 195 (German translation of 

 original descr.). — Brabourne and Chubb, Birds South Amer., i, 1912, 70. — 

 SwANN, Synop. Accip., ed. 2, 1922, 103; Monogr. Birds Prey, i, 1930, 481 

 (monogr.).— Chapman, Bull. Amer. Mus. Nat. Hist., Iv, 1926, 235 (San 

 Jos6 de Sumarco, Ecuador, imm.). — Peters, Check-list Birds of World, i, 



1^ Two specimens from Truando, Colombia, and Piquiatuba, Pard,, Brazil. 

 " Two specimens from Perm6, Panama, and Piquiatuba, Pard,, Brazil. 

 18 Two specimens from Bolivia and Ecuador. 



