BIRD LIFE IN THE UKUBAMBA VALLEY OF PERU. 89 



(2680) MECOCERCllLLS STICTOPTERUS TAENIOPTERIS Cabanis. 



Mecocerculus faeniopterus Cabanis, Journ. fur Omith.. 1874, p. 98 (Peru). 

 Mecocerculus stictopterus cuplastus Oberholser, Proc. U. S. Nat. Mus., 1903, 

 p. 63 (Maraynioc, Peru). See Berlepsch, Ornis, vol. 14, 1907, p. 489. 



Found in the humid Temperate Zone. Identified on the basis of 

 comparison with specimens from the Temperate Zone in Ecuador 

 and Colombia. 



Above Torontoy (10,700 feet), 2; Occobamba Valley, 1. 



(2680a) MECOCERCULUS SUBTROPICALIS Chapman. 



Mecocerculus subtropicolis Chapman, Proc. Biol. Soc. Waah., vol. 32, 1919, p. 262 

 (San Miguel Bridge, Urubamba Canyon, Peru). 



Specific cliaracters. — Similar to Mecocerculus stictopterus faeniopterus 

 Cabanis, but back greener, cap grayer and less sharply defhied from 

 nape, wing coverts whiter and broader, ear coverts grayer, super- 

 ciliary less extended posteriorly, abdominal region more yellow; size 

 smaller. 



An apparently distinct species of the Subtropical Zone. 



San Miguel Bridge, 4; Idma, 3. 



(2682) MECOCERCULUS POECILOCERCUS (Sclater and Salvin). 



Serpophaga poecilocercus Sclater and Salvin, Nom. Av., 1873, p. 158 (Puellaro, 

 Ecuador). 



Agrees with Ecuadorian and Colombian specimens. 

 San Miguel Bridge, 1. 



(2700) KNIPOLEGUS HETEROGYNA OCKENDENI Hartert. 



Knipolegus aterrimus ockendeni Hartert, Bull. Brit. Orn. Club, vol. 23, 1908, p. 

 11 (Carabaya, Peru). 



Our specimens agree with topotypical examples and differ from 

 true aterrimus as described, and also in the lack of rufous in the wing 

 of the female. In view of the close faunal affinities of the Subtropical 

 Zone of southeastern Peru with that of Bolivia, the differences be- 

 tween the Peruvian and Bolivian forms of this bird seem to be of 

 specific value. It is evident, however, on comparison with topo- 

 types of heterogyna from Cajabamba, that the Peruvian foi-ms are 

 subspecifically related. 



San Miguel Bridge, 5 males, 3 females; Torontoy, 5 males, 2 



(2718) MUSCISAXICOLA ALBIFRONS (TschudI). 



Ptyonurn alUfrom Tschudt. Faun. Per., Aves, p. 167, pi. 12, fig. 2 (Peru). 

 Muscisaxicola albi/rons Berlepsch and Stolzmann, Ornis, 1906, p. 103 

 (Vilcabamba). 



La Raya, 3. 



