CHERRIE : ORNITHOLOGY OF THE ORINOCO REGION. 205 
b'. Tips of rectrices very slightly or not at all decurved. 
c. Lores and chin buffy gray, general color of under parts a dark 
Isabella color (Ridgway's Color Standards), wing usually more 
than 100 mm Dend'ocincla olivacea phai- 
ochroa. 
c'. Lores dusky gray, chin whitish, general color of under parts brown- 
ish olive, wing usually less than lOO mm Pendrocincla merula. 
a'. Nostrils rounded, operculum indistinct or absent. 
6. Bill very long and slender and much curved Campylorhamphus trofhilif' 
y. Bill not unusually long, slender or much curved. 
c. Back not marked with pale or buSy shaft lines or stripes (at least 
not indicated on more than anterior part of mantle and then in 
combination with a whitish bill). 
d. Top of head not marked with shaft lines or spots Xiplwcolaptes major. 
d'. Top of head distinctly marked with shaft lines or spots. 
e. Feathers of back marked with indistinct transverse dusky bars Dendrocolaptes certbia. 
e'. Feathers of back without any indication of transverse bars. 
/. Large, total length more than 25 cm.; wing more than 120 
mm Nasica longirostris. 
/'. Smaller, total length less than 2S cm.; wing less than 120 
g. Crown marked with narrow, pale, buffy shaft streaks .... Dendroplex piciis picus. 
g'. Crown marked with broadly guttate buRy shaft spots Dendroplex picirost'is. 
c\ Back distinctly marked with buffy shaft lines or stripes, bill 
blackish. 
d. Under parts, including under tail-coverts, with distinct, well 
defined, pale, buffy streaks Picolaples albolineatus. 
d'. Streaks on under parts, 1/ extending to crissum and under tail- 
coverts, then not distinct or well defined. 
e. Feathers of chin and upper throat narrowly edged with dusky 
or blackish. 
/. Distance from nostrils to tip of bill greater than length of 
g. Chin and upper throat whitish or pale buffy, cutting edge 
of ma.Killa distinctly decurved at the tip Xiphorhynckus jardinei. 
s'. Chin and upper throat ochraceous buff, cutting edge of 
maxilla nearly straight Xiphorhynchits pardalotus. 
/', Distance from nostrils to tip of bill not greater than length 
of tarsus Xiphorhynckus obsoletus no- 
«'. Feathers of chin and upper throat not edged with dusky or 
blackish. 
/. Under tail coverts strongly washed with rufous T. Xiphorhynchits gitltalus gut- 
tatotdt's. 
/'. Under tail coverts uniform with abdomen, faintly, or not at 
all washed with rufous Xiphorhynchus siisurrans. 
SiTT--\soMUS AM-iiiZONUs Lafresnaye. 
Sittasomus amazonus Lafr., Rev. Zool. 1850. p. 509, 590; Berlepsch & 
Hartert, p. 62. 
Sittasomus sylvicllus amaconiis Hellmayr. Xovit. Zool. X\'II; 1911 : 
p. 2-3 (Caura, \'enezuela). 
Not observed l:)y tlie writer, but Berlepsch and Hartert record it 
from Suapiire on the Caura River. 
Glvpiiorhvnchus ccxE.^Tus cuNE.^TUS ( Lichteiistein ) . 
Dendrocolaptes ciiiicatiis Licht., Abh. Kon. Akad. \\"iss. Berl. 1S20. p. 
204, PI. 2, fig. 2; 
Glyphorhyuchiis ciincatus Berlepscli & Hartert, p. 62. 
Common at the falls of ^laipures and beyond. Specimens were 
collected at Maipures, Xericagua. Munduapo and Capuano. Ber- 
lepsch and Hartert record specimens from Suapure. La Pricion and 
Xicare on the Caura River. 
