BIRDS OF NOETH AND MIDDLE AMEEICA. 281 



h Secondaries with exposed portion longer than exposed portion of 

 greater wing-coverts; rectrices and tail-coverts extremely broad; 

 bare orbital space smaller, without papillose outer ring. 



Picazurus (extralimital).« 



hh Secondaries with exposed portion shorter than exposed portion of 



greater coverts; rectrices and tail-coverts moderate m width; 



bare orbital space much larger, with a con_spicuous papillose 



outer ring Crossophtlialmus (p. 320). 



ee Tail longer (more than three-fourths aa long as wmg); feet relatively 

 smaller, the toes more slender; outermost primary shorter than fifth 



(from outside) (EncBnas(p. 323). 



cc. Tail as long as or longer than wing, strongly graduated, the rectrices apering 



terminally, pointed at tip. (Ectopistese.) Ectopistes (p. 333). 



bb. Middle toe (without claw) less than five-sixths aa long aa tarsus, the latter 

 with upper part entirely bare. _ , , , -jji^ 



c Tail crossed by a post-median band of black (sometimes obsolete on middle 

 rectrices); a subauricular spot or streak of black. (Zenmdse.) 

 d Wings more or less spotted with black, the distal coverts not white. 

 ' e Rectrices 14 the tail more than three-fifths as long as wing; tarsus less than 

 one-sixth as long as wing; bill not decurved; smaller wing-coverts im- 

 maculate; a black subauricular spot, but no pale auricular stripe. 

 f Tail longer and more graduated (nearly tliree-fourths as long as wing to 



■'■ , +!,„., ,„^r,trN Zenaidura (p. 339). 



longer than wing) -■• ^^ 



ff Tail shorter, rounded rather than graduated (less than two-thirds as long 



•"■ . , Zenaida (p. 354). 



as wmg) . ^ 1, 



ee Rectrices 12; the tail less than three-fifths as long as wmg; tarsus nearly 

 one-fifth as long as wing; bill deciurved; smaller ^ving-coverts spotted 

 or streaked; no subauricular spot, but a pale auricular band margined 



above and below by a black line Nesopelia p. 372 . 



dd Wings immaculate, the distal coverts white Melopelia (p 376) . 



' cc Tail without a black cross-band; sides of head and upper neck immaculate 

 'd Larger (wing not less than 140 mm .) ; culmen two-thii-ds as long as tarsus the 

 latter leas than one-seventh aa long as wing; tail more than two-thirds as 

 Ion- as wing, extensively white apically (except on middle rectrices ; 



a bLk band across nape Streptopelia (p o8o) 



dd Smaller (wing less than 135 mm.); culmen less than two-thirds as long as 

 tarsus, the latter nearly one-sixth as long as wing; tail less than two-thirds 



as long as wing, wholly black Metriopelia (extralimital . 



aa Win.^ relatively shorter and more rounded, the longest pnmanes exceeding distal 

 secondaries by not more (usually less) than one-third the length -^^^^^ f^^'^ 

 ondarieseutaxic=quintocubital,exceptinLepio«x?a,Geo«rwon,andOr.oj>eZm.)c 



'^Picazunis Des Murs, in Chenu Enc. d'Hist. Nat., Ois vi 1854 39; type, by 

 tautonymy, Colurala v^ozuro Temminck. (Southern Brazil, Argentina, Paraguay, 

 Bolivia, Peru, etc.; two species.) 



5 Melriovelia Bonaparte, Compt. Rend., xl, 1855, 23; Consp. ^e^^Av., ii 1857, 75 

 tvpe Columha melanoptera Gmelm.- Metriopeleia (emendation) Reichenbach, Volls. 

 NTi^g CoWoariae,i, 1861, 17. (Ecuador to Chile and Argentina; two species, 

 of which J/, aymara has not been exammed.) , ,r ■ t i,-m. i,q<.a not 



This character assumed for Nesopelia, Melopelia, and Metnopeha, which ha.e not 

 been examined with reference to the character m question. 



