34:} 



irrct'ii, tlio vdiivs of tlic A'atluTs less hluisli. their tips black; winys deep 

 ciiac-tura drab, the od^cs of the upper surface cf the feathers hay Rreen, 

 tiiose of tlie ])riiuaries more bluisii. tlie lesser coverts wholly cerro ureen ; 

 chill between biscay ^rceii and liirid bice jireen : sides of the neclc like the 

 crown: tliroal, .jn.i;uluMi. and upper iireast of tiie same color, but lighter: 

 remainder of the lower parts biscay lireen. aideriorly \aryinir to bhnsb 

 llirht bice lireen : crissum similar, lint d;irker and duller : linint,' of win;,' iiirht 

 cinnamon, the ed,n(>s of the winir mixed with lilnish ^i-een ; "eyes black." 



McdsiirciiK iitx. Type: win.i;. 1(»(;.."> mm.: tail. 17!>: ex|Mised culmeii. .'Il.ri: 

 tarsus, 10.2; middle toe without claw. 1.">. 



Tjfpc locttlUy. — Ilyutaniha, just below th(> falls of the Purus Kiver. north- 

 western Brazil. 



flcoffraphic iJistrUndloit.- Northwestern I'.razil. east to the Madeira 

 liivor; w^cst probably to eastern JOcuadoi' : and north probably to central 

 southern Colombia. 



Rcmarlcs. — This new race is most closely allied to Electron itloti/rln/nchum 

 Itjinholitvmum. with which it agrees in the condition of its nuddle tail- 

 feathers, but from which it differs in its paler head, more yellowish back 

 and upper surfaces of wings, and lighter, as well as posteriorly more yel- 

 lowish or greenish (less bluish), lower surface. The bird recorded by Dr. 

 C. E. Hellmayr from Humaytha on the Madeira River' belongs, of course, to 

 this form. No specimens from eastern Ecuador have been examined, but the 

 bird from this region is, without much doubt, referable here. The example 

 from Florencia, central southern Columbia, which Dr. F. M. Chapman indi- 

 cated as belonging to Electron platyrlmncJium piirrlwtaemum^, is apparently 

 very close to this new subspecies, if, indeed not identical, 



ELECTRON PLATYRHYNCHUM PYRRHOLAEMUM (Berlepsch and 

 Stolzmann). 



P[rwnirhyncltus]. plUiti/rhynchus]. pprrholacmus BERLEPSCH and 

 STOLZMANN, Proc. Zool. Soc. Ixmd., 1902, II, pt. 1, October, 1902, p. 

 35, in text ("La Merced. Borgona", [central Peru]), 

 Electron platyrlurnchnm mcdianum TODD, Proc. Biol. Soc. Wash.. XXVI, 



August 8, 191.S, p. 174 ("Rio Turutu, Provence del Sara, Bolivia"). 

 Chars, fiuhsp. — Similar to Electron platyrln/nrlium oricnticola, but pileum 

 darker, back ami upper surface of wing less yellowish, and inferior sur- 

 f;ice darker, more bluish. 



Measurements. — Wing, 114 — 117 mm.: tail. ISS — 190: exposed culmen. 

 .']4— 37; tarsus, 14—18; middle toe without claw. Ki. 

 Type locality. — La Merced, central Peru.' 

 Geographic distribution. — Peru and Bolivia. 



'Novit. Zool,, XIV, No. 2. November 1. 1907, p. 40.'!. 



-Bull. Aiiier. Miis. Nat. Hist., XXXVII. I!tl7. p. '-'(iit. 



•So ^'iveu ti.v Dr. C. E. Hollinayr. Xovit. Zool.. XIV, 1007, p. 40.'^ 



