BIRDS OF NUliTII AND MIDDLE AMEKIC'A. 481 



fic/ii/r.- 'rciu]}Ovn\o jKirts of foiitiiuMital Ami'i'ica. fioiii Maiiitolxi 

 to Patuj^onia. 



KKV I'O IIIK SI'KIIKS AND SI liSl'lCriKS OF < ISToTlK )m'.S.« 



a. Pik'Viiii ilistiiictly sticakrd. 



h. No (listiiut siipoifiliary stripe, tlie whole side of liead l)einf^ ilnll whitisli, nar- 

 rowly streaked with darker; riiinp iiuinacnlate, or else inueli less eonspicu- 

 onsly streaked than back. 

 c. Rnnip streaked or spotted with hhu-k and white; wing longer, tail, hill, tarsi, 

 and toes shorter (adult male averaging wing 45, tail 38.G, exposed enlmeii 

 10.5, tarsus 16.8, middle toe 11.2). (Eastern North America.) 



Cistothonas slellaris (p. 482) 

 cc. Eump immaculate brown; w'ing shorter, tail, bill, tarsi, and toes longer (adult 

 male averaging wing 42.5, tail 40.2, eulmen 11, tarsus 18, middle toe, 12.5). 

 ( Cistotliorus poli/ghUns.) 

 d. Darker, with whitish streaks on back narrower. (Brazil, etc.) 



Cistothorus polyglottus polyglottus (extralimital)'' 

 d<l. Pak'r, with white streaks on l)ack }»roader. 



e. More rufescent above, with white streaks on back broader; tail longer 

 (44 in male). (Isthmus of Panama.) 



Cistotliorus polyglottus lucidus, adult (p. 486) 

 ee. Grayer above, with white streaks on back narrower; tail shorter (38-42 

 in male). (Eastern ^Mexico to Guatemala.) 



Cistothorus polyglottus elegans, adult (p. 484) 

 b. A distinct superciliary stripe of i)ale brownish buff or buffy white; rump very 

 heavily streaked or blotched with black and streaked with whitish. (South- 

 ern Brazil to Chile, Patagonia, and Falkland Islands. ) 



Cistothorus platensis (extralimital)<-" 

 aa. Pileum plain brown. 



b. Smaller (wing not more tlian 43); no superciliary stripe. 



c. Pileum and hindneck light bistre; rump and ujiper tail-coverts deep rus- 

 set-brown; flanks and under tail-coverts deep cinnamon-buff. 



Cistothorus polyglottus lucidus, young'^ (p. 486) 



«Only those forms which I have l)een able to examine in the present connection 

 are included. 



b ThryothoruK poh/gloltuii Vieillot, Nouv. Diet. d'Hist. Nat., xxxiv, 1819, 59 (Para- 

 guay; based on Ihdo roz Azara, Apunt., ii, 29). — CistotJiorns jwli/glottas Pelzeln, Orn. 

 Bras., 1871, 48, 414; Salviu and Godman, Biol. Centr.-Am., Aves, i, 1880, 105, part 

 (Brazil, Paraguay); Sharpe, Cat. Birds Brit. Mus., vi, 1881, 245, i>art.—Trog!od>jtes 

 omnisonm Naumann, Vog. Deutschl., iii, 1823, tab. to p. 724 (ex Lichtenstein, manu- 

 script; based on Todo voz Azara, Apunt., ii, 29). — (?) Turdus wferscapularis Nord- 

 mann, in Erman's Verz. Thiere. Pfianz., 1835, 13 (Brazil). — Clistothonis'] intersaijm- 

 titris Cal)anis, Mus. Hein., i, 1850, 78, footnote. 



<• [,S'(////rf] platensis Latham, Index Orn., ii, 1790, 548 (based on Boitclct de 

 Ihicnos Ayrcs Buffon, Hist. Nat. Ois., v, 361; PI. Enl., pi. 730, lig. 2); Hylrmalhrous 

 platevsis ^Maximilian, Beitr. Naturg. Bras., iii, 1831, 742; Thryothin-ns plalnisls Hart- 

 laub, Index Azara's Apunt., 10; Pelzeln, Orn. Bras., 1871, 48, 414; Cistotliorus pbt- 

 trusis Sclater, Proc. Zool. Soc. Lond., 1860, 384; Sharpe, Cat. Birds Brit. Mus., vi, 

 1881, 24i.—T[hryothorus'] eifZoim Bonaparte, Consp. Av., i, 1850, 221 (Brazil; based 

 on Voy. Pole Sud., Ois., pi. 19, fig. 6). — Plstothorm fasciohttns Burmeister, Journ. fiir 

 Orn., 1860, 252. 



''The young of other forms of the genus not seen by me. 



10384— VOL 3—03 31 



