386 Bulhtin American Museum of Natural History. [Vol. XXXVI, 



(2104) Dichrozona cinctus (Pelz.). 



Cyphorhinus cinctus Pelz., Orn. Bras., 1868, p. 47 (S. Joaquim, Borba). 

 Dichrozona zononota Ridg., Proc. U. S. N. M., X, 1887, p. 524 (Santarem, 

 Brazil; type examined). 



A pair from Florencia and a female from La Morelia add this species 

 to the fauna of Colombia. The male agrees with the type of Dichrozona 

 zononota Ridgw. of Santarem, but is much deeper above (cinnamon-brown 

 rather than dark ochraceous-tawny or buckthorn-brown), the flanks are 

 grayer and the breast less heavily spotted. The females have the crown 

 and back essentially the same shade as the male and are consequently also 

 darker above than the Santarem bird. 



Florencia, 2; La Morelia, 1. 



(2121) Hypocnemis cantator peruviana Tacz. 

 Hypocnemis peruvianus Tacz., Orn. Perou, II, 1884, p. 61 (Chamicuros, Peru). 



Inhabits the Tropical Zone of Amazonian Colombia. I have no Peru- 

 vian specimens but our birds are much nearer six specimens from Zamora, 

 southeastern Ecuador, than they are to twenty-three recently collected 

 examples from the Potaro River, British Guiana. The difference is particu- 

 larly marked in the females, true cantator apparently never having pro- 

 nounced dorsal stripes in this sex, while the female of peruviana (as it is 

 represented by our Colombian and Ecuadorian series) is never without them. 

 The same comment holds good of our males of peruviana, but several of the 

 Guiana birds show well-marked dorsal streaks. 



La Morelia, 4. 



. (2124) Hypocnemis hypoxantha Scl. 

 Hypocnemis hypoxantha Scl., P. Z. S., 1868, p. 573, pi. xUii (Upper Amazons). 



A female from La Morelia agrees with Sclater's plate of this species 

 (P. Z. S., 1868, pi. xliii) which appears not to have been previously recorded 

 from Colombia. 



La Morelia, 1. 



(2129) Myrmoborus leucophrys leucophrys {Tsck). 



Pithys leucophrys Tsch., Fauna Peruana, 1845, 6, p. 176, pi. xi, fig. 2 ("Fluss 

 TuUumayo"). 



