CHERRIE: ORMTfiOLOGV OF THE ORINOCO REGION. 16/ 
CoEREBA GuiANENsis (Cabauisj. 
Certhiola i:;iiianci[sis Cab., ]\Ius. Hein. I. 1850. p. 97. 
Coereba guiancnsis Berlepsch & Hartert, p. 17. 
Klages sent specimens to the Tring" Museum that were collected 
at Suapure on the Caura River; and there is a typical example in the 
American Museum collection, sent by the same collector from Ciudad 
Bolivar. So that C. L lutcola and C. guiaiiensis are found together at 
that point. 
TAXGARIDAE— EUPHONIAS AND TANAGERS. 
Eighteen species and subspecies were collected by the writer on 
the middle and upper Orinoco, in the immediate vicinity of the river, 
which together with twelve additional species taken at various points 
on the Caura River formed the list of thirty included in Berlepsch and 
Hartert's paper. 
Probably all, excepting Piranga rubra, are resident species, although 
the number of species or the number of individuals that may be found 
in any particular locality at any given season is influenced L'irgely by 
the ripening of the various fruits that constitute their chief food. 
Key to the Genera. Species and Subspecies of Tangaridae. 
a. Middle of belly and general color of under parts yellow. yellowij;h or 
rufous orange (not ochraceous nor buff) the throat and upper breast 
and the sides and flanks may or may not be uniform with the belly. 
b. No blue or black markings on sides or flanks. 
c. Throat black, blue-black or purplish black. 
d. No yellow or yellowish markingson the head (male) Tanagra ' rufiventris. 
d'. Forehead and more or less of crown yellow or yellowish. 
e. Under tail coverts white Tanagra olivacea olivacea. 
e'. Under tail coverts yellow or yellowish white. 
/. Under parts dark chrome yellow; yellow crown patch ex- 
tending little, if any, back of eye and truncated, rather than 
rounded in outline; back and nape with a decided violace- 
ous gloss Tanagra chlorotica aurea. 
f. Under parts pale orange-yellow; yellow crown patch ex- 
tending back of eye and posterior outline convex rather than 
truncated ; back and nape with a decided steel blue gloss Tanagra irinitalis. 
c'. Throat not black, blue-black, or violaceous black. 
d. Upper parts olive or olive-greenish (and crown not blue). 
e. Crissum rufous-orange (female) Tanagra rufiventris. 
e'. Crissum. orange-yellowish. yellow\ yellowish or yellowish white. 
\chIoroHca aurea. 
f. Wing less than 60 mm. (females) Tanagra \ IrinHatis. 
[olivacea olivacea. 
/'. Wing not less than 60 mm. (females) Tanagra { sieini. 
d'. Upper parts black with violaceous or steel blue gloss. 
e. Outer tail-feathers marked with white on inner webs Tanagra violacea Itchten- 
e' . No white markings on inner webs of outer tail-feathers Tanagra tnelaniira. 
h'. Sides and flanks blue flecked with black. 
c. Middle of breast and abdomen pale sulphur yellow ; shoulder patch of 
caerulean rather than greenish blue (Upper Orinoco and Upper 
Caura river region) Tangara mexicana media. 
'The characters here employed to distinguish the various species of Tanagra apply, with rare excep- 
tions, to the males only. 
