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- 

 mature male). 

 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 primary (9th) shorter 



than 7th Myospiza. 



h'. Wing more pointed and outer primary longerthan the 7th. 



i. Inner secondaries elongated reaching nearly to tips of Sicalis (immature and 

 primaries. females). 



t'. Inner secondaries and tertials not elongated Sicalis (adults). 



b'. Tail-feathers acuminate and tail longer than wing Emberizoides (one species). 



'. Plumage not striated, either above or below. 



6. 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. 



c'. No lateral stripes on crown Saltalor. 



b'. No superciliary stripe. 



c. Depth of bill at base equal to distance from the angle of rictus to 



tip of bill 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. 



e. A partially concealed crown-patch of bright scarlet Coryphospingus pilealus 



(adult male). 

 «'. No crown-patch. 



/. Outer (gth) primary longer than 7th. 



g. A white patch at base of outer webs of sth, 6th and 

 7th primaries extending beyond tips of coverts 



h. Under parts yellow Aslragalinns psallria colum- 



bianus. 



h'. Under parts white Dolospingus nuchalis. 



g' , No white patch at base of outer webs of sth, 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 flaveola. 



h! . Inner webs of wing-quills narrowly edged with pale 



yellowish; smaller, wing less than 6s mm Sicalis Columbiana. 



/'. Outer primary shorter than the 6th. 

 g. Wing more than 65 mm. 



h. Wing-tip equal to or longer than tarsus Cyanocompsarothscki'ili.* 



h'. Wing-tip not equal to tarsus. 



i. Under parts white, throat red (adult) or buff (immature) Paroaria nigrogenys. 



iHellmayr, Novit. Zool. XII. 1905. p. 277. 



