8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I45 



a very narrow line of white on the edge of both eyelids ; lores, side of 

 head below eye, and anterior auricular feathers neutral gray at the 

 tips and more or less white at the base ; throat and upper foreneck 

 very pale grayish white ; lower foreneck, upper breast, and sides pallid 

 neutral gray ; flanks, abdomen, and under tail coverts pure white ; edge 

 of wing white with a slight spotting of neutral gray; inner wing 

 coverts and edge of inner webs of primaries white ; outermost wing 

 coverts white mixed with neutral gray. Bill dull black, with the base of 

 the gonys whitish; tarsus, toes, and claws black. (From dried skin.) 



Measurements. — Male, type, wing 58.0, tail 49.4, culmen from base 

 10.5, tarsus 15.5 mm. 



Female, wing 52.5, tail 42.8, culmen from base 10.2, tarsus 15.6 mm. 



Range. — Known only from the upper Rio Pucro, at 950 meters 

 elevation on the base of Cerro Mali, Serrania del Darien, Panama. 



Remarks. — A female, U.S. Nat. Mus. 483341, was taken with the 

 male at the same location, on July 4, 1963 (Gorgas Mem. Lab. no. 

 3-00328). This bird has the following colors: Crown slightly darker 

 than in the male, with the same partly hidden white center; upper 

 surface Kronberg's green ; tail feathers blacker than in the male, 

 edged lightly with dull green; light edgings on wing chartreuse 

 yellow; side of head as in male; throat and upper foreneck duller 

 white ; lower foreneck, breast, and sides washed lightly with vetiver 

 green; abdomen sea- foam green; under tail coverts chalcedony yel- 

 low ; lighter part of under wing coverts, and inner webs of basal part 

 of primaries like abdomen. 



The male has been compared with the type of Elaenia c. paramhae 

 in the American Museum of Natural History. Through the kindness 

 of James Bond I have examined a female and two males of that race 

 in immature dress in the Academy of Natural Sciences of Philadelphia, 

 taken on the Rio Jurubida, inland from Nuqui near the central coast 

 of the Department of Choco, northwestern Colombia. The two marked 

 male in color are like the female. Compared with the female from 

 Cerro Mali the three from Nuqui are very slightly clearer green on 

 the back, with the base color of the crown faintly lighter gray. Below 

 they differ decidedly as the throat and upper foreneck are duller, 

 grayer, the lower foreneck, breast, and sides are much greener, and 

 the rest of the under surface is decidedly deeper yellow. 



The specimens from the Cerro Tacarcuna massif in Darien mark an 

 interesting addition to the flycatchers known from Panama. As a 

 species, Elaenia caniceps ranges from Colombia and southern Vene- 

 zuela to Bolivia, northern Argentina, and southern Brazil. With the 

 present description four subspecies are recognized in this area. 



