272 BIRDS OF THE REPUBLIC OF PANAMA PART 2 



as it rested on an open perch near a small stream, where the rapid 

 vibration of its white-tipped tail attracted my attention. These occur- 

 rences are an extension of the range from adjacent Choco in Colombia, 

 where there is record of the species at Unguia. 



The 5 from Panama do not differ appreciably in color from our 

 series from northern Colombia, or in size. The following measure- 

 ments are included for comparison. 



Males (10 from Choco, Cordoba, Bolivar, Magdalena, and Tolima, 

 Colombia), wing 57.2-60.3 (59.2), tail 52.2-57.6 (54.4), culmen from 

 base 34.5-38.9 (36.3) mm. 



Females (7 from Choco, Bolivar, Magdalena, and Guajira, Colom- 

 bia), wing 52.7-56.3 (54.7), tail 51.6-56.8 (54.0), culmen from base 

 31.1-35.6 (32.9) mm. 



PHAETHORNIS ANTHOPHILUS HYALINUS Bangs 



Phacthornis hyalinus Bangs, Auk, vol. 18, January 1901, p. 27. (Isla del Rey, 

 Archipielago de las Perlas, Panama.) 



Characters. — Distal end of elongated central rectrices averaging 

 broader ; throat less heavily streaked ; slightly darker green above. 



Measurements. — Males (6 from islas del Rey and San Jose), wing 

 56.2-61.0 (57.8), tail 53.1-58.7 (56.0), culmen from base 35.0-38.8 

 (36.6) mm. 



Females (6 from islas del Rey, San Jose, and Pedro Gonzalez), 

 wing 54.2-57.6 (55.1), tail 52.4-60.0 (55.3), culmen from base 33.5- 

 37.4 (35.1) mm. 



Resident in the Archipielago de las Perlas (recorded from Isla 

 San Jose, Isla Pedro Gonzalez, Isla del Rey, and Isla Cafias). 



The series of 3 specimens from which this interesting race was de- 

 scribed, taken on "San Miguel Island" ( = Isla del Rey) in 1900 by 

 W. W. Brown, Jr., was supplemented by 5 more secured by this 

 collector in a second visit in 1904. It was recorded also from Isla 

 Pedro Gonzalez by Bond and de Schauensee (Acad. Nat. Sci. Phila- 

 delphia, Monogr. no. 6, 1944, p. 31) from the collections of the Fifth 

 Vanderbilt Expedition, taken May 10, 1941. In 1944 J. P. E. Morrison 

 and I collected a small series on Isla San Jose between March 5 and 

 September 13. On Pedro Gonzalez I saw 2 on March 11 along an 

 open, shaded trail but failed to collect any. They decoyed readily by 

 squeaking, but came so near, attracted by the openings in the barrels 

 of my gun, that I could not shoot them. On San Jose they ranged in 

 open areas in the forest, and along the banks of the larger streams. 



January 22 and 23, 1960, I saw several on Isla Canas, and on Janu- 



