88 BULLETIN 117, UNITED STATES NATIONAL MUSEUM. 



(2667a) OCHTHOECA LESSONI TECTRICIALIS. new subspecies. 



Sithspecific characters. — ^Underparts as in Ochthoeca rufipectoralis 

 (d'Orbigny and Lafresnaye) ; upper parts more like those of 0. 

 lessoni lessoni Sclater, but back browner, head darker, greater coverts 

 very narrowly, instead of broadly, tipped with rich cinnamon-rufous 

 or hazel; inner wing-quills very faintly if at all margined with this 

 color. 



Type. — No. 145244, Amer. Mus. Nat. Hist., male adult, Huaracondo 

 Canyon (altitude 10,000 feet), July 23, 1916; Geo. K. Cherrie. 



Material examined. — Ochthoeca lessoni tectricialis. Peru: Type 

 locality, 1 male, 1 female; above Machu Picchu (12,000 feet), 1 male, 

 1 female; above Torontoy (10,700-14,000 feet), 2 males. Ochthoeca 

 lessoni lessoni. Colombia: 11 males, 6 females. Ecuador: Pich- 

 incha, l;"Ambato," 1. Ochthoeca rufipectoralis. Bolivia: Incach- 

 aca, Prov. Cochabamba, 3 males, 5 females. 



Remarlcs. — The form of Ochthoeca lessoni inhabiting southern Peru 

 is an obvious intermediate between 0. lessoni lessoni of Colombia 

 and 0. rufipectoralis of Bolivia. It is, however, nearer to the former 

 and apparently does not intergrade with the latter, in which the 

 wing-bars are wholly absent and the back is of nearly the same color 

 as the crown, while in tectricialis, as in true lessoni, the back is de- 

 cidedly browner than the cro-wm and the greater coverts are defi- 

 nitely (if narrowly) tipped with cinnamon-rufous. 



The proposed new form has the same deeply colored breast as in 

 rufipectoralis, and, as in that species, this color more nearly reaches 

 the base of the bill than in lessoni, in which the chin is gray. 



(2670) OCHTHOECA THORACICA Taczanowski. 



Ochthoeca thoracica Taczanowski, Proc. Zool. Soc, 1874, p. 133 (Chilpes, Peru). 

 Above Torontoy (9,500-10,700 feet), 3. 



(2678) MECOCERCULUS LEUCOPHRYS SETOPHAGOIDES (Bonaparte). 



Tyrannula setophagoides Bonaparte, Atti Sesta Riun. Sci. ItaL, Milan, 1845, 

 p. 405 (Bogotd). 



Averaging slightly paler above but essentially agreeing with a large 

 series from Colombia, showing no approach, therefore, to the Bolivian 

 race. Specimens from Venezuela (near Merida and Las Palmales in 

 the Carupano region) have the wing bars and margins to secondaries 

 much paler, and in this respect are nearer to leucophrys than to 

 setophagoides. They may stand as M. leucophrys nigriceps Chapman. 



Above Machu Picchu (12,000 feet), 3; above Torontoy (14,000 

 feet), 5. 



