187J.] MR. P. L. SCLATER ON THE GENUS SYNALLAXIS. 9 



Fusco-rufescens, pileo toto usque ad frontem et alis extus rufis : 

 cauda luridiore rufa : subtus fusca, in gutture cineraceo perfusa : 

 long, tota 6, alee 2 - 7, caudce reclr. med. 2'S, ext. 9. 



Hab. Rio Napo ( Verreaux) ; vie. of Tarma, Western Peru {Jelski) . 



Mus. Varsoviano. 



Obs. Species admodum fords, cauda brevi graduata, colore rufo 

 ad frontem extenso, necnon cauda luride rufa distincta. 



I am a little doubtful whetber my skin from Zamora, Ecuador 

 (P. Z. S. 1859, p. 192), sbould be referred bere or to S. mcesta, as 

 it is quite immature. 



Sect. b. Species pileo et alis extus rufis ; cauda fusca. 



5. Synallaxis spixi. 



Parulus ruficeps, Spix, Av. Bras. i. p. 85, pi. 86. f. 1. 



Synallaxis ruficapillus, Reichb. Handb. p. 158. 



Synallaxis spixi, Sclater, P. Z. S. 1856, p. 98, et 1859, pp. 192, 

 1 96, et Cat. A. B. p. 1 5 1 ; Pelzeln, Sitz. Akad. Wien, xxxiv. p. 117, 

 et Orn. Bras. p. 35 ; Reinh. Fuglef. Bras. Camp. p. 193; Burm. 

 P. Z. S. 1868, p. 536; Scl. et Salv. P. Z. S. 1869, p. 632. 



Synallaxis albescens, Burm. Syst. Ueb. iii. p. 39 ; Cab. et Hein. 

 Mus. Hein. ii. p. 27. 



Fusca : pileo usque ad frontem et alis extus rufis : subtus cinerea, 

 ventre medio dilutiore, hypochondriis et crisso fuscescentibus : 

 long, tota 6'5, ales 2*1, caudce 3*5. 



Hab. Bras, merid. or. et rep. Arg. prov. S. Paulo (Natt.) ; 

 Campos of Minas Geraes (Lund) ; Buenos Ayres (Hudson). 



This appears to be tbe species figured by Spix as the male of his 

 Parulus ruficeps, whence I named it S. spixi. It is not uncommon 

 in collections from Rio, but does not appear to go much further 

 north. Southward it extends to the vicinity of Buenos Ayres, where 

 Mr. Hudson has obtained specimens. 



6. Synallaxis albescens. 



Synallaxis albescens, Temm. PI. Col. 227. f. 2 ; Sclater, P. Z. S. 

 1859, p. 192; Cat. A. B. p. 151 ; Scl. et Salv. P. Z. S. 1866, p. 183, 

 1868, p. 167, 1869, pp. 252 & 598 ; Salvin, P. Z. S. 1867, p. 143 ; 

 Pelzeln, Sitz. Akad. Wien, xxxiv. p. 118, et Orn. Br. p. 36. 



Synallaxis albigularis, Sclater, P. Z. S. 1858, pp. 63, 456, and 

 1859, p. 192, and Cat. A. B. p. 151 ; Scl. et Salv. P. Z. S. 1866, 

 p. 183, 1868, p. 141, and 1873, p. 269. 



Fusca : pileo, nisi in fronte, alis extus et cauda rufis : subtus 

 dilutior, gula et ventre medio albis : long, tota 6, alee 21, 

 caudce 2' 7. 



Hab. Veragua et inde Am. merid. usque ad remp. Arg. ; Veragua 

 (Arce) ; Bogota (Mus. P.L.S.) ; Ecuador, Zamora (Fraser) ; Vene- 

 zuela (Goering); Trinidad (Mus. P.L.S.); Guiana (Mus. Berol.); 

 Nauta and Upper Ucayali (Bartl.); Pebas (Hauxwell) ; Cosnipata, 

 W. Peru (Tf hitely) ; S.E. and Central Brazil and Lower Amazonia 

 (Natt.) ; Mendoza (Weisshaupt) ; Buenos Ayres (Hudson). 



Obs. Differt a S. spixi fronte fusca et gula albescente. 



