530 XnUTII AMKIvMA.N IMKIJS. 



tnil. First fjiiill loiiiri-st. llf.id stii|M'«|. IJnck sficiikrd. Whit*? 

 iH'Iicatli. A wliilc lilolfli oil the clid of llit- t;iil-l('atli('r>. 

 Zonotrichia. Tail iii<»<l(Taf»'ly irrailnatt'd. Wiii^'"': iiiouiMatt*, alxhU as 

 loii^' as ihc tail, n-a»'liiii;jf alMHit ovi-r the hasal roiirtli of tlit' tail; lirst 

 quill K'ss than tin* socoihI to rouith. Fi-t't laiyc Head stripnl witii 

 black and \vhit<'. oi- with l»rt»wn and ochratvotis. iSack streakt'd. 

 Junco. Tail vci v nfailv ('(inal to the \vini;s, sli^hily t-marjrinatt', ami 

 diridrdiy roundt'd. Outer toe rather lonj:er than inner, reaehirir the 

 nnddle claw. Xo streaks anywhere exeepl in vounir ; hlaek or ash- 

 color above; belly white; with or without a nitbus back and siiles. 

 Outer tail-teathers white. 



Poospiza. Tail ItiiLrthened, slightly jjfraduated; the feathers innisually 

 broad to the cntl. IJiil slender. Winj;s about as long as the tail, reach- 

 ing Init little beyond its external bas«'. Tertials luoad, and. with the 

 secondaries, rather lengthene(l. Second to lifth quills nearly cipial. an(l 

 longest. liill daik lead-color. Tail Iilack. Inilbrin ashy-brown 

 al»(»ve; "white beneath. Sides of head \\\\\i strijtes i>f black and white. 

 h. Tail decidedly forked ; a little shorter than the wing-, sunietinies a little 

 lo n ire r. 



Spizella Si/^e rather small. Wings long. Lower niandil»le largest. 

 Umlbrni Deneath. or with a pectoral spot or the chin black. 

 C Tail lengthened ami graduated ; dee'dedly longer than the wings, which ai-e 

 very short, scarce! v extending l>eyond the external l»ase of the tail. Feet reach- 

 ing but little beyond the middle of th«' tail. Species all streaked above; streaked 

 or nearly unicolor bi-neath. Xo whit*- on wings or tail, (^)uter lateral toe the 

 longer. First quill not the shorti'si of the primaries. (Melospizeae.) 



Melospiza. Culmen and connnissure nearly straight. Claws stout; 

 hinder one as large as its digit. Tail-feathers rather i»road. Body 

 stn'ake(l beneatii, 



Peucaea. Culmen and connnissm-e ein-ved, (^laws weak; himler one 

 not nnieh curveil, lU'cidedly slu)rter than its digit. Tail-featlieis narrow. 

 "Without stri-aks l)cneath, excej)ting a narrow maxillaiv stripe. 

 D. Tail rather short, and nnich graduated; longer than the wings; the midril* 

 more meilian. Culmen curved. Tarsus <-onsiderably longer than middle toe. 

 Outer tt>e longer. But little dill'treiice in the length of the (piills; the outer 

 ones nuK-h rounded; even the second quill is shorter than any other jirimary 

 except the first. 



Zlmbernagra. Color, olive-greeu above. 



Gems CENTRONYX, liAiiti). 



Ccntronyx, B.viud, Birds X. Am. 1Sj8, 440. (Tyj>»', Embcrizn bairdi. At i>.) 



Gkn. CiiAit. Bill elongated; the lower mandible smaller: outlines nearly straight. 

 Tarsus lengthened, (-onsideraltly exeeciling the middle toe. Lati'ral toes equal, not reach- 

 ing the l)ase of the middle claw. Hind toe very large: the claw rather longer than its 

 digit, and in its elongation resembling Plectritphonfn, but more ctu'ved: the digit and claw 

 together rather lomrer than the middle toe ami claw. Wings very long, reae-hing beyond 

 the middle of the tail, and beyond the end of the coverts. Tcitials shorter than the 

 primaries, and but little longer than the secondaries. Tail short, .nuch less than fioni the 

 carpal ;oint to end of secondaries; little more than two thirds the entire wing. It is 



