TURDUS MURINUS, Salvin. 
RORAIMA DUSKY THRUSH. 
Turdus murinus, Salvin, Ibis, 1885, p. 197. 
T. similis 7. ignobili, et plagá gulari alba nulla, sed saturatior, preepectore et hypochondriis preecipué saturaté 
brunneis : rostro nigro. 
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THIS is a very dark form of 7. ignobilis, with which Seebohm considered it to be identical. А 
comparison of a series, however, shows that the Guiana birds are very much darker than any of the 
Colombian ones. Specimens obtained by Whitely at different times of the year show certain tints of 
plumage caused by seasonal variation, but the bill is invariably blackish, and evidently never becomes 
yellow at any time of the bird's life. 
The stripes on the throat are always most distinctly indicated, but the cheeks are uniform like 
the sides of the face. It is always a much darker bird, both in its breeding and winter plumages, 
than T. ignobilis. Тһе axillaries are also browner than in that species. 
The British Museum contains a large series of this species from British Guiana, obtained by 
Whitely on the Merumé Mountains in June, and on Roraima, at an altitude of 3500 to 5000 feet, in 
the months of June, August, September, October, November, December, and J anuary. А specimen 
obtained by Jelski on the River Oyapock in Cayenne is in the Salvin-Godman Collection. 
The adult male measures as follows :—Total length 9:4 inches, culmen 0:8, wing 4-65, tail 3:65, 
tarsus 1:25. 
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— M 
The adult female measures :— Total length 8'7 inches, culmen 0:8, wing 4:35, tail 3:55, tarsus 1:2. 
Young. Distinguished from the adults in having fulvous spots at the ends of the wing-coverts ; 
the throat distinctly streaked with blackish, and the fore-neck, breast, and sides of body obscured 
with dark brown bars across the ends of the feathers (spec. in mus. Salvin- Godman). 
The specimen figured is in the Seebohm Collection and is from Roraima. Тһе descriptions are 
taken from Roraima examples in the British Museum. ІК. B. 8. 
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