1917.] Chapman, Distribution of Bird-life in Colombia. 537 



A specimen from Andalucia (alt. 7000 ft.) in the Eastern Andes near the 

 head of the Magdalena Valley, more nearly approaches the southern and 

 western form. 



The change in color of old Bogota skins which have not been mounted 

 or exposed to light is particularly marked in this species, and is well shown 

 by comparison of our series of recently collected skins with Bogot£ skins 

 collected at least thirty or forty years ago. Fresh birds have the back 

 chsetura-drab, the underparts mouse-gray, while in old skins these parts 

 are respectively sepia and drab, of Ridgway's ' Color Standards.' 



Bogota, 3 ; El Roble, 1 ; Chipaque, 3 ; Quetame, 4. 



(35440) Semimerula gigas gigantodes (Cab.). 



Turdus gigantodes Cab., J. f. O., 1873, p. 315 (Maraynioo, Peru). 

 Turdus gigas Scl. & Salv., P. Z. S., 1879, p. 491 (Retire, Sta. Elena). 



Very common in the Temperate Zone of the Western Andes and Central 

 Andes, on the western slope of the first-named range descending at one 

 point to as low as 4000 feet, possibly because of the comparatively low 

 temperature prevailing on this humid slope. 



Our series of fifty specimens average slightly darker but agrees other- 

 wise with four specimens from northern Peru (Chachapoyas and Molino- 

 pampa, and ten miles west of Balsas) collected by Osgood in 1912, and- 

 loaned me by Mr. C. B. Cory, which may doubtless be considered as typical 

 of gigantodes; and also with five specimens collected for us by Richardson 

 on Pichincha, Ecuador, in May and July, 1913. 



These birds are materially darker than Bogota specimens; the under- 

 parts are essentially concolor, whereas in gigas the abdomen is paler than the 

 breast, the under wing-coverts are noticeably darker and rarely show even 

 a trace of the ochraceous wash which is apparently always present in gigas. 



Old 'Quito' and 'Ambato' specimens, like old 'Bogota' specimens, are 

 markedly paler and browner than freshly collected ones. 



Paramillo, 11; Andes w. of Popayan (10,340 ft.), 1; Cerro Munchique, 

 6; Cocal (4000 ft.), 2; Almaguer, 1; Valle de las Pappas, 1; Laguneta, 9; 

 Santa Isabel, 4; Sta. Elena, 1; Barro Blanco, 1; Rio Toche, 6; El Eden, 2. 



(3551) Hylocichla aliciae alicise (Baird). 



Turdus alidm Baibd, Rep. Expl. & Surv. R. R. Pac. IX, 1858, p. 217 (West 

 Northfield, lU.). 



Hylocichla alicice Allen, Bull. A. M. N. H., XIII, 1900, p. 183 (Las Nubes; 

 Onaca; Valparaiso; Santa Marta). 



Puerto Valdivia, 1, Dec. 18. 



