"Rhynchophanes maccowni. Black-breasted Longspur. Bay-winged Longspur. Upper parts slate-gray, streaked with dusky and grayish or yellowish-brown, especially on the interscapulars. No cervical collar, but a chestnut patch on the wings, formed by median coverts. Crown jet-black, bounded by a white superciliary line; sides of head whitish, but auriculars more or less slaty. Throat white, bounded by firm black maxillary stripes. Breast jet-black in broad crescentic form, sharply defined against the white throat, shading behind into slaty-blackish, becoming more and more mixed with white on the belly and sides, till posteriorly the parts are pure white; lining of wings white. All the tail-feathers, except the middle pair, and bases and tips of intermediate ones, white, ending squarely across both webs. Bill blackish-plumbeous, pale at base below; feet brownish-black. Elliot Coues, 1884

Black-breasted Longspur

"Rhynchophanes maccowni. Black-breasted Longspur. Bay-winged Longspur. Upper parts slate-gray, streaked…

"Centrophanes lapponicus. Lapland Longspur. Whole head, throat and breast jet-black, bordered with buffy or whitish, which forms a post-ocular stripe separating black of crown from that of sides of head, sometimes continues to the bill. A broad cervical chestnut collar, separated from the black cap by whitish or buffy line and nuchal spot. Upper parts brownish-black completely streaked with buff or whitish edges of the feathers; under parts white, the sides streaked with black. Wings dusky, with pale or brownish edgings of the feathers, but no strong markings. Tail like wing, with large white spaces on outer 3 feathers. Bill yellow, black-tipped. Legs and feet black." Elliot Coues, 1884

Lapland Longspur

"Centrophanes lapponicus. Lapland Longspur. Whole head, throat and breast jet-black, bordered with buffy…