92 BULLETIN IIT, UNITED STATES NATIONAL. MUSEUM. 



(2829) ORCHILUS ECAUDATUS (d'Orbigny and Lafresnaye). 



Todirostrum ecaudatum (I'Orbigny and Lafresnaye, Syn. Av., pt. 1, 1837, p. 47 

 (Yuracares, Boli\'ia). 



Found in the Tropical Zone. Compared with two Bolivian speci- 

 mens (Rio Chimore) the two birds listed below have the crown-cap 

 larger, the superciliary more ai'>parent, the sides with less greenish 

 yellow. These differences may in part be due to the make-up of 

 the skins. 



Rio Cosireni, 2. 



(2840) PHYLLOSCARTES VENTRALIS ANGUSTIROSTRIS (Lafresnaye and d'Orbigny). 



Muscicapa angustirostris Lafresnaye and d'ORBiGNY, Syn. Av., pt. 1, lS37f 

 p. 52 (Yungas, Bolivia). See von Berlepsch, Ornis, vol. 14, 1907, p. 486. 



Leptopogon triftis Sclater and Salvin, Proc. Zool. Soc, 1876, p. 254 (Simacu, 

 Bolivia). 



On the basis of descriptions only, I refer to this species the speci- 

 mens listed below, one from Santo Domingo, southeastern Peru, and 

 two from Incachaca, Bolivia. The San Miguel Bridge birds have 

 slightly less yellow on the throat, and the upperparts are somewhat 

 duller with the crown less bright than the back. These birds are 

 barely separable subspecifically from Leptopogon fiavovirens Law- 

 rence, of which we have the type, but in default of authentic speci- 

 mens of true ventralis I make no further comment on their relationship. 



San Miguel Bridge, 3. 



(2847) MYIOSYMPOTES ACUTIPENNIS (Sclater and Salvin). 



Hapalocercus aciUipennis Sclater and Salvin, Proc. Zool. Soc, 1873, p. 137 

 (Bogoti). — Berlepsch and Stolzmann, Ornis, 1906, p. 86 (Idtna). 



This species ranges from the Tropical to the Temperate Zone with- 

 out apparent variation. I have only a female from Colombia. 



Rio San Miguel, 2 ; Santa Ana, 2 ; Idma, 2 ; San Miguel Bridge, 3 ; 

 Calca, 1. 



(2863) OREOTRICCUS PLUMBEICEPS (Lawrence). 



Pogonotriccus plumheiceps Lawrence, Ann. Lye. Nat. Hist. New York, vol. 9, 

 1870, p. 267 (Bogotd). 



Compared with four specimens from Colombia, these Peruvian 

 birds have the throat more extensively gray, the breast more olive. 

 Idma, 4. 



(2871) SERPOPHAGA CINEREA CINEREA (Strickland). 



Euscarthmus citierea Strickland, Ann. Mag. Nat. Hist., vol. 13, 1844, p. 414 

 (Chile-Bolivia). 



Ranges from the Tropical to the Temperate Zones. Specimens 

 from the upper zone, however, are slightly larger than those from the 

 lower. 



Idma, 1; San Miguel Bridge, 5; Chospiyoc, 2; Calca, 3; Pisac, 1. 



