BROOKLYN INSTITUTE MUSEUM. SCIENCE BULLETIN 2. 6. 
h'. Back not striated (no pale markings). 
i. Greater and middle wing-coverts more or less con- 
spicuously tipped, edged, or spotted with white, huff, 
or black. 
j. None of the rectrices tipped or marked with white. 
k. Lateral toes with claws not reaching to base of 
claw of middle toe. 
/. Wing coverts with small white or whitish 
apical spots Myrmoderas atrothorax. 
v. Wing coverts with subapical black spots Myrmeciza boucardi grisei- 
pectus. 
k'. Lateral toes with claws reaching to or beyond 
the base of the claw of the middle toe. 
/. Feathers of chin and throat black, at least 
basally i^ad Myrmopagis haemalono- 
I'. Feathers of chin and throat not black. 
m. Middle of back dusky gray, not greatly 
different from remaining upper parts (f Myrmeciza schisiacca. 
m'. Middle of back rufous, quite different from 
remaining upper parts. 
«. Throat ochraceous buff, remaining lower 
parts tawny olive 9 Myr?nopagis haemalonota 
haematonota. 
n'. Throat pale (whitish), remaining lower 
parts gray or brownish gray Terenura spodioptila. 
j'. Some or all of the rectrices tipped or edged with 
white (in C. tyrannina the white tips to tail-feathers 
are almost obsolete). 
k. General color of under-parts yellow or yellowish. HerpsUochmtis f rater, 
k'. General color of under-parts black, gray or pale 
buffy. 
/. A concealed white dorsal spot. 
m. General color, above and below, black <^Cercomacra nigricans. 
m'. General color, above and below, gray. 
n. Shoulder patch white d'Cercomacra Iyra7i7iina. 
7i'. Shoulder patch slate gray like wing- 
coverts (pale markings on wing-coverts 
almost obsolete) (fCerconwcra ctnerascens. 
I'. No concealed white dorsal spot. 
m. Back black or slate black Myrmoiherula melaena. 
m'. Back smoke gray or cinnamon brown. 
n. Upper-parts cinnamon brown Microrhopias orenocensis. 
n'. Upper-parts smoke gray Microrhopias cano-fumosus . 
i. Greater and middle wing-coverts unmarked (some 
males of Cercomacra cinerascens have obsolete pale 
markings on coverts). 
j. General color above and below slate gray Cercomacra cina-ascens. 
J'. General color above and below not gray. 
k. Dorsal concealed spot white 9 Cercomacra tyrannina. 
k'. No concealed dorsal spot. 
/. With hazel crown patch Hapalocercus meloryphus. 
I'. No crown patch. 
m. Above grayish olive 9 Myrmopagis axillaris. 
!9 Myrmopagis melaena. 
9 Myrmopagis schisticolor in- 
"Second phalanx ot middle toe partly united to outer toe; acrotarsium 
fused (booted) "^ (Ptthys. Hylophylax. Anoplops). 
b. Back marked either with rounded buff or white spots or narrow white, 
or buffy. apical bands to the feathers. 
c. Markings on back rounded — white or buffy. 
d. Back markings white Hylophylax piinclulata. 
d'. Back markings cinnamon buff Hylophylax naevia naevia. 
c'. Back markings in the shape of narrow apical, white or cinnamon 
buff, bands to the feathers. 
d. Apical margins to back feathers white. 
{ d* Hylophylax poecilinola poe- 
e. Entire under parts including throat dark gray I ciHnola. 
1 9 Hylophylax poecilinola lepi- 
{ donola. 
e'. Under parts ochraceous buff brightening to rufous on the 
throat and darkening to buffy brown on the flanks 9 Hylophylax poecilinota lepi- 
donota. 
d'. Apical margins of back feathers cinnamon buff, (forehead, sides 
of head and chin ferruginous, remaining under parts gray) 9 Hylophylax poecilinola Peo- 
cilinota. 
iRidgway, Birds N. & M. America, V: IQU: p. 16. 
