Mr. P. L. Sclater on the Genus Grallaria. 443 



Grallaria rex, Lafr. R.ev. Zool. 1842, p. 333 ; Bp. Consp. 

 p. 204. 



Suj)rk olivacea, pileo cineraceo, plumarum marginibus an- 

 gustis nigris, scapis clare fulvis ; cauda rufa ; loris, mys- 

 tacibus et maculis quibusdam in gula media albis ; gutture 

 brunneo, albo striolato ; abdomiue sordide albo, briinneo 

 variegato ; ventre medio et crisso cum subalaribus pallide 

 fulvis : long, tota 7*5, alse 4'6j caudse 1'7 , tarsi 2*0. 

 Hab. Cayenna et Guiana. 



My diagnosis of this species, whicb is scarce in collections, 

 is taken from an example kindly lent to me by Mr. John 

 Trotter, who has recently procured it in Demerara. Natterer 

 obtained an example of this bird at Marabitanas, E-io 

 Negro. 



9. Grallaria imperator. 

 Myioturdus rex, Max. Beitr. iii. p. 1027. 

 Grallaria rex, Burm. Syst. Ueb. iii. p. 50. 

 Myiothera grallaria, Licht. Doubl. p. 43. 

 Grallaria imperator, Lafr. Eev. Zool. 1842, p. 333 ; Sclater, 

 P. Z. S. 1858, p. 280, et Cat. A. B. p. 191 ; Scl. et Salv. Norn. 

 Av. Neotr. p. 75 ; Bp. Consp. p. 204. 



Colobathris imperator, Cab. Orn, Not. i. p. 217. 

 Myiotrichas imperatrix. Cab. et Hein. Mus. Hein. ii. 

 p. 6. 



Supra olivacea, nucha cineracea, plumis nigro limbatis et 

 lineis scapas occupantibus fulvis ornatis ; cauda rufa ; 

 loris et mystacibus latis et macula cervicali albis ; gut- 

 ture nigro ; abdomine sordide albo, fulvo mixto, et nigri- 

 cante frequenter transfasciolato ; subalaribus et crisso 

 Isete fulvis ; rostro corneo, pedibus rubellis : long, tota 

 8"0, alse 4'9, caudse 1*7, tarsi 1*9. 

 Hah. Brasilia merid.-orientalis. 

 Mus. P. L. S. et S.-G. 



This is at least a well-marked species, easily distinguished 

 from most of the other forms of this section, as here de- 

 scribed, by its black throat, conspicuous white neck-spot, and 

 the strong black edgings to the upper plumage. It comes 

 nearest to G. varia, but may be recognized by its black throat 

 and larger size. 



