CHERRIE: ORNITHOLOGY OF THE ORINOCO REGION. 185 
Without olive-yellow wing and tail edgings. 
;'. Entire upper parts a nearly uniform brownish grey; belly and 
under tail-coverts white Coryphospingus (female and 
young). 
;'. Upper parts, head and back, dark olive brown, wings and tail 
black, wing-coverts and tertials edged on outer webs with raw 
umber; belly whitish under tail-coverts brownish buff (wood 
brown); or immature males assuming adult plumage, under 
tail coverts mixed with black feathers with whitish tips Volatinia (females and 
young) . 
e'. Olive yellow edgings to wings and tail Sicalis (female and im- 
d'. Back distinctly striated. 
g. Head not striated; shoulders, lesser and median wing- 
coverts chestnut Spiza. 
g'. Head striated, no chestnut wing coverts. 
h. Wing short and rounded, outer primar>' (9th) shorter 
than 7th Myospiza. 
k'. Wing more pointed and outer primary longer than the 7th. 
i. Inner secondaries elongated reaching nearly to tips- of Sicalis (immature and 
primaries . females) . 
i'. Inner secondaries and tertials not elongated Stcalis (adults). 
Tail-feathers acuminate and tail longer than wing Emberizoides (one species). 
^lumage not striated, either above or below. 
Having well developed superciliary stripe yellowish, white or grey. 
c. Well developed black or blackish stripes on sides of crown extend- 
ing from the bill to the nape. 
d. Narrow black band across the breast Arremon. 
d'. No dark band across the breast Arremonops. 
rf. No lateral stripes on crown Saltalor. 
No superciliary stripe. 
c. Depth of bill at base equal to distance from the angle of rictus to 
tip of bin Oryzoborus. 
c'. Depth of bill at base less than distance from angle of the rictus to 
tip of bill. 
d. Glossy blue black both above and below Volatinia jacarini splendens 
(adult males). 
d' Not blue black both above and below. 
t*. A partially concealed crown-patch of bright scarlet Coryphospingus pileatus 
(adult male). 
c'. No crown-patch. 
/. Outer (9th) primary longer than 7th. 
g. A white patch at base of outer webs of 5tli, 6th and 
7th primaries extending beyond tips of coverts 
h. Under parts yellow Aslragalinus psallna cohun- 
h'. Under parts white DolospingKS nuchalis. 
g'. No white patch at base of outer webs of 5th, 6th and 7th 
primaries Sicalis (adults.) 
h. Inner webs of wing-quills broadly edged with yellow 
similar to under wing-coverts; size larger, wing more 
than 65 mm Sicalis Jlaveola. 
k'. Inner webs of wing-quills narrowly edged with pale 
yellowish; smaller, wing less than 65 mm Sicalis Columbiana. 
/'. Outer primary shorter than the 6th. 
g. Wing more than 65 mm. 
h. Wing-tip equal to or longer than tarsus Cyanocoinpsa rolhuhi'di. ^ 
h'. Wing-tip not equal to tarsus. 
t". Under parts white, throat red (adult) or buff (immature) Paroarta nigrogeyiys. 
iHellmayr, Novit. Zool. XII. 1905. p. 277. 
