442 Bidlelin American Museum of Natural History. [Vol. XXXVI, 



(2820) Csenotriccus ruficeps ruficeps (Lafr.). 

 Muscicapa (Todirostrum) ruficeps Lafk., Rev. Zool. 1843, p. 291 (Colombia). 



Occurs from the upper part of the Subtropical to the Temperate Zone 

 in all three ranges. Specimens from the Central and Western Andes have 

 the head slightly paler than those from near Bogota. Old 'Bogota' skins 

 are not unlike fresh ones. Two immature specimens taken at Cocal, June 

 16 and 17, 1911, respectively, differ from adults in lacking the rufous head, 

 the crown being but slightly browner than the back, the chin like the throat. 

 One of these birds has several rufous feathers in the crown showing its un- 

 mistakable relations to ruficeps, which we have also taken at Cocal. The 

 other, differs only in lacking these rufous feathers and bears, therefore, so 

 strong a resemblance to Casnotriccus simplex Berl. (of which I have one 

 specimen, the type of my Ochthoeca keaysi, identified as C. simplex "or 

 subsp." by von Berlepsch ^) as to suggest that simplex is based on an im- 

 mature example of C. r. hapalopteryx, the southern form of ruficeps. Our 

 specimen of simplex differs from the young of ruficeps much as hapalopteryx 

 is said to differ from it. That is, the back is browner, the margins of the 

 wings and tail less brightly rufous. In size, the specimen of simplex is 

 slightly larger and the mandible is darker than in the young of ruficeps. 

 The bill is larger than in most specimens of ruficeps but can be matched by 

 examples in our series. In short, if Ccenotriccus simplex is not synonymous 

 with Cmnotriecus ruficeps hapalopteryx, the young of the latter is practically 

 identical with it ! 



Cocal (alt. 6000 ft.) 3; Andes w. of Popayan, 5; Almaguer, 1; above 

 Salento (9000 ft.), 1; Salento, 2; Santa Isabel, 1. 



(2824) Lophotriccus spicifer {Lafr.). 

 Todirostrum spiciferum Lafk., Rev. Zool., 1846, p. 363 ("Brasilia")- 

 La Morelia, 1. 



(2825) Lophotriccus squamaecristatus squamsecristatus (Lafr.). 

 F[lege T. = Todirostrum] squamacrista Lafr., Rev. Zool., 1846, p. 363 (Bogotd). 



Inhabits the Subtropical Zone of all three ranges. I can detect no dif- 

 ference between birds from Las Lomitas in the Western Andes and Buena 

 Vista in the Eastern Andes. The species has not been reported from the 



1 Cf. Berl. & Stolz., P. Z. S., 1896, 361. 



