BIRDS OF NORTH AND MIDDLE AMERICA. 131 
of pileum short; anteorbital and postocular regions (A. rufigula) or 
suborbital, postocular, and lower portion of loral regions (A. bicolor 
and allies) naked; latero-frontal feathers short and erect (denser, 
more plush-like in A. rujfigula). 
Coloration.—Plain brown or olive, with throat tawny cr rufescent, 
or with throat and median under parts white; sexes alike or nearly so. 
Range.—Honduras to Amazon Valley and Cayenne.. (Eleven or 
more species recognized.°) 
KEY TO THE SPECIES OF ANOPLOPS. 
a. Underparts brown (no white), becoming tawny or rufous on throat and auricular 
region. (British Guiana to lower Amazon Valley.) 
Anoplops rufigula (extralimital).¢ 
aa. Underparts broadly white medially, including throat; auricular region black or 
dusky. 
b. Above bright tawny-chestnut, more rufescent on forehead. 
c. Sides and flanks chestnut or rufous-chestnut. (Colombia.) 
Anoplops ruficeps (extralimital).¢ 
ce. Sides and flanks olive-brown, becoming slate-grayish next to white of breast, 
etc. (Colombia and upper Amazon Valley.) 
Anoplops leucaspis (extralimital).¢ 
bb. Above vandyke brown, not more rufescent on forehead. 
c. Forehead and postauricular regions slate color. (Eastern Panamé.) 
Anoplops bicolor (p. 132). 
cc. Forehead and postauricular region brown, like pileum, etc. (Western Pan- 
am4 to eastern Honduras.).........-...----- Anoplops olivascens (p. 132). 
« A. lunulata (Sclater and Salvin), a species which I have not seen, has black and 
ochraceous lunulations on the back, and whitish spots on inner webs of rectrices. 
b Of these I have not seen the following: A. lunulata (Sclater and Salvin), A. 
salvini (Berlepsch), A. griseiventris (Pelzeln), A. cristata (Pelzeln), A. berlepschi Sneth- 
lage, A. hoffmannsi Hellmayr, A. pallidus Cherrie, and A. melanosticta (Sclater 
and Salvin). <Anoplops lunulata differs from A. bicolor and its allies in more 
slender bill, much narrower and more broadly operculate nostrils, and very much 
denser as well as longer feathering of the loral region. The style of coloration is 
somewhat different, there being no white on the under parts, the chin and throat 
being rufous-tawny and the under parts of the body brown. The naked skin on 
sides of head, together with the legs and feet, are yellow, instead of blue and dusky 
horn color, respectively, as in A. bicolor, etc. 
¢ Turdus rufigula Boddaert, Tabl. Pl. Enl., 1783, 39 (based on Petit merle brun & 
gorge rousse de Cayenne Daubenton, Pl. Enl., pl. 644, fig. 2)—Anoplops rufigula 
Cabanis, Wiegmann’s Archiv fir Naturg., 1847, pt. i, 214.—Pithys rufigula Sclater, 
Proc. Zool. Soc. Lond., 1858, 273.—Gymnopithys rufigula Sclater, Cat. Birds Brit. 
Mus., xv, 1890, 297.—Turdus pectoralis Latham, Index Orn., i, 1790, 357.— Myothera 
pectoralis Temminck, Tabl. Méth., 188—?, 17.— Myrmothera pectoralis Lesson, Traité 
d’Orn., 1831, 396. 
€ Gymnopithys ruficeps Salvin and Godman, Biol. Centr.-Am., Aves, ii, sig. 28, 
Feb., 1892, 222, footnote (Cauca Valley, Colombia; coll. Brit. Mus.). 
¢ Myrmeciza leucaspis Sclater, Proc. Zool. Soc. Lond., 1855 (pub. Apr. 11), 253, 
aves, pl. 70 (Chamicuros, e. Peru; coll. J. Gould).—Pithys leucaspis Sclater, Proc. 
Zool. Soc. Lond., 1858, 274; Cat. Birds Brit. Mus., xv, 1890, 295.—G[ymnopithys] 
leucaspis Salvin and Godman, Biol. Centr.-Am., Aves, ii, sig. 28, Feb., 1892, 221, 
in text, 
