238 
Page 304. Add:— 
TURDUS CONRADI, Salvad. & Festa. 
FESTA'S THRUSH. 
Turdus conradi, Salvad. & Festa, Boll. Mus. Torino, xiv. no. 357, p. 4 (1899). 
T. similis T. chiguanco, sed minor et pallidior. 
Dr. Festa, during his expedition to Ecuador, procured two adults and one young bixd of a 
'Thrush which Count Salvadori, after confirmation from Count Von Berlepsch, has decided to be 
distinct from the true T. chiguanco of Lafresnaye and D'Orbigny. 
I have re-examined our series of T. chiguanco in the Museum Collection, fourteen in all, and I 
find great variation iu the depth of colour in specimens, and, so far as І can see, these differences are 
indicative of breeding and winter livery. The worn-plumaged and paler individuals are those 
procured from January to May, which is apparently the breediug-season, while those obtained 
between June and September are in much better plumage and evidently not breeding. I have no 
doubt myself that this Thrush has a seasonal plumage, the newly-moulted birds being darker and not 
so grey. Тһе darkest of all is the bird from Tilotilo in Bolivia, which must be separated as a race, 
if my surmise as to the identity of T. conradi and T. chiguanco should prove to be wrong: it is at 
least as distinct as the Peruvian and Ecuador forms, and the white shaft-streaks on the under 
tail-coverts are reduced to a line. This, however, is a very variable character, and the size of the 
bill varies greatly throughout the series. 
As to the larger dimensions supposed to characterize T. conradi, it will be seen from the 
measurements of the wing given below that, although the Ecuadorian birds are slightly larger as a 
rule, their dimensions are approached by birds from other localities. 
1. 4, Riobamba (5:6). 2. в, Cuenca (5:4). 3. Ecuador, Fraser (4:9). 4. 4, Caras, Ecuador, 
Simons (52). 5. в, Caras (5-6). 6. 9, Riobamba, Simons (5:5). 7. 3, Cañar, Simons (5:7). 
8. 2, Islay (47). 9. 2, Islay (5:15). 10. ғ, Islay CO. 11. Arequipa (5:5). 12. 2, 
Arequipa (5:2). 13. в, Catarindo Valley, Peru (£7). 14. 4, Cajamarca (5:2). 15. 4, Са)ашагса 
(5:4). 16. Tilotilo, Bolivia (5:4). 17. $, Tarapaca (5:0). 
Page 319. 
TURDUS LIBONYANUS. 
Dr. HELLMAYR (J. f. O. 1902, pp. 207-221) has given a review of T. libonyanus and its allies. 
ІШІ 
Кита 
| dan o 
did 
Шіш 
WL 
