Mr. P. L. Sclater on the Genus Grallaria. 
443 
Grallaria rex, Lafr. Rev. Zool. 1842, p. 333; Bp. Consp. 
p. 204. 
Supra 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; abdomine sordide albo, brunneo 
variegato; ventre medio et crisso cum subalaribus pallide 
fulvis : long, tota 7*5, alse 4*6, caudse 1*7, tarsi 2*0. 
Hab. Cayenna et Guiana. 
My diagnosis of this species, which is scarce in collections, 
is taken from an example kindly lent to me by Mr. John 
Trotter, who has recently procured it in Hemerara. Natterer 
obtained an example of this bird at Marabitanas, Rio 
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. Rev. 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 
lsete fulvis; rostro corneo, pedibus rubellis : long, tota 
8*0, alae 4*9, caudae 1*7, tarsi 1*9. 
Hab. 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. 
