343 
green, the edges of the feathers less bluish, their tips black; wings deep 
chaetura drab, the edges of the upper surface of the feathers hay green, 
those of the primaries more bluish, the lesser coverts wholly cerro green; 
chin between biscay green and light bice green; sides of the neck like the 
crown; throat, jugulum, and upper breast of the same color, but lighter; 
remainder of the lower parts biseay green, anteriorly varying to bluish 
light bice green; crissum similar, but darker and duller; lining of wing light 
cinnamon, the edges of the wing mixed with bluish green; “eyes black.” 
Measurements —Type: wing, 106.5 mm.; tail, 179; exposed culmen, 31.5; 
tarsus, 16.2; middle toe without claw, 13. 
Type locality —Hyutaniha, just below the falls of the Purus River, north- 
western Brazil. 
Geographic distribution—Northwestern Brazil, east to the Madeira 
River; west probably to eastern Ecuador; and north probably to central 
southern Colombia. 
Remarks —This new race is most closely allied to Electron platyrhynchum 
pyrrholaemum, with which it agrees in the condition of its middle 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 platyrhynchum pyrrholaemum’, is apparently 
very close to this new subspecies, if, indeed not identical. 
ELECTRON PLATYRHYNCHUM PYRRHOLAEMUM (Berlepsch and 
Stolzmann). 
P{lrionirhynchus). p[latyrhynchus]. pyrrholaemus BERLEPSCH and 
STOLZMANN, Proc. Zool. Soc. Lond., 1902, II, pt. 1, October, 1902, p. 
35, in text (“La Merced. Borgona’’, [central Peru]). 
Electron platyrhynchum medianum TODD, Proc. Biol. Soc. Wash., X XVI, 
August 8, 1913, p. 174 (“Rio Turutu, Provence del Sara, Bolivia’). 
Chars. subsp—Similar to Electron platyrhynchum orienticola, but pileum 
darker, back and upper surface of wing less yellowish, and inferior sur- 
face darker, more bluish. 
Measurements.—Wing, 114—117 mm.; tail, 188—190; exposed culmen, 
34—-37; tarsus, 14-18; middle toe without claw, 16. 
La Merced, central Peru.® 
Type locality. 
Geographic distribution.—Peru and Bolivia. 
1Novit. Zool., XIV, No. 2, November 1, 1907, p. 403. 
Bull. Amer. Mus. Nat. Hist., XXXVII, 1917, p. 269. > 
280 giyen by Dr. C. E. Hellmayr, Novit. Zool., XIV, 1907, p. 408. 
