59. SIETSTES. 181 



stead of dusky greyish brown," and wings and tail edged with 

 ferruginous. 



Hob. St. Domingo. 



59. SIRYSTES. 



Sirystes, Cab. et Hein. Mas. Hein. ii. p. 75 (1859) S. sibilator. 



Key to the Species. 



A. Rump cinereous like the back 1. sibilator, p. 181. 



B. Rump white : 



I edgings of wing-coverts narrow, 



{ greyish 2. albocinereus, p. 181. 



( edgings of wing-coverts broad, white 3. albogriseus, p. 182. 



1. Sirystes sibilator. 



Pitador, Azara, Apunt. ii. p. 135. 



Muscicapa sibilator, Vieill. Nouv. Diet. xxi. p. 457 ; id. Enc Metli 



p. 831. 

 Muscicapa sibilans, Licht. Doubl. p. 54. 

 Tyrannula sibilans, Hartl. Ind. Az. p. 13. 

 Myiarchus sibilans, Burm. Syst. Ueb. ii. p. 472. 

 Sirystes sibilator, Cab. et Hein. Mm, Hein. ii. p. 75 ; Scl. Cat. A. B. 



p. 222; Pelz. Om. Bras. p. Ill; Scl. et Salv. Nomencl. p. 50; 



Cab.J.f. 0. 1874, p. 89; Berl. et Jher. Zeitschr. yes. Om. 1885, 



p. 135 (Rio Grande do Sul). 



Above pale cinereous, lighter on the rump and with slight blackish 

 striations on the back ; cap black ; wings black ; wing-coverts and 

 outer secondaries broadly edged with cinereous white ; tail black .- 

 beneath pale cinereous ; middle of belly, under wing-coverts, and 

 inner margins of primaries whitish ; bill and feet black : whole 

 length 7"5 inches, wing 3*8, tail 3*4. Female similar. 



Hob. S.E. Brazil. 



a, b.S $ad. sk. Pelotas, Kio Grande do Sid, Salvin-Godman Coll. 

 Brazil (Joyner). 



c. S ad. sk. Rio Claro, Goyaz, Brazil (Joy ner). Salvin-Godman Coll. 



d. Ad. sk. Brazil. Sclater Coll. 



e. Ad. sk. Brazil. Purchased. 



f. Ad. st. Brazil. Purchased. 



2. Sirystes albocinereus. (Plate XIV.) 



Tyrannus sp. inc., Scl. et Salv. P. Z. S. 1866, p. 189. 



Sirystes albogriseus, Scl. et Salv. P. Z. S. 1873, p. 280 ; Tacz. Om. 



Per. ii. p. 287. 

 Sirystes albocinereus, Scl. et Salv. P. Z. S. 1880, p. 156. 



Above cinereous ; rump pure white ; cap black ; wings black ; 

 wing-coverts slightly edged with cinereous, outer secondaries mar- 

 gined with white ; tail and upper tail-coverts black : beneath white ; 

 throat and breast tinged with cinereous ; under wing-coverts white ; 



