344 
Remarks.—This race is apparently confined to Peru and Bolivia, since 
birds of this species from Brazil, Colombia, and probably eastern Ecuador, 
belong to other forms. The absence of racquets on the middle rectrices is 
evidently only a subspecific character, as this occurs sometimes in other 
races which normally have well-defined racquets. 
The Bolivian bird has been described as a new race, Electron platy- 
rhynchum medianum:, which is similar to Hlectron platyrhynchum pyrrho- 
laemum, but is supposed to have the chin spot more bluish, the posterior 
under parts and exposed surfaces of remiges somewhat less bluish, and the 
rufescent areas of chest slightly darker and duller. These differences are 
apparently individual, an opinion in which Mr. Todd himself now coneurs. 
1Blectron platyrhynchum medianum TODD, Proc. Biol, Soe. Wash., XXXVI, 
August 8, 1913, p. 174 (‘‘Rio Turutu, Provence del Sara, Bolivia’’). 
