2IO BIRDS OF THE REPUBLIC OF PANAMA PART 4 



heard, coming from high forest trees, a song that he believed was ut- 

 tered by Smaragdolanius. It was usually a three-noted pee-pee-pee, 

 but occasionally two-noted. So far as he knows, no shrike-vireo has 

 been collected or reported seen in this section of Darien. 



VIREO GRISEUS NOVEBORACENSIS (Gmelin): White-eyed Vireo, 



Vireo Ojiblanco 



Muscicapa noveboracensis Gmelin, 1789, Syst. Nat., 1(2), p. 947. (In Noveboraco 

 [ =z New York] ; based on "Green Fly-catcher" of Pennant, 1785, Arctic Zool., 

 2, p. 389.) 



Small; upper surface olive-green; yellow stripe from lores around 

 eye; whitish wing-bars; undersurface white with yellow wash on sides. 



Description. — Length 112-124 mm. Adult (sexes alike), stripe from 

 above lores and eye-ring yellow; upper surface plain greenish olive or 

 olive-green; wings dusky, with middle and greater coverts tipped yel- 

 lowish white, forming two wing bars; primaries and secondaries nar- 

 rowly edged with greenish, and tertials broadly edged yellowish white; 

 tail dusky with outer web of feathers edged greenish; throat and breast 

 white lightly suffused with gray; sides and flanks pale lemon yellow, 

 rest of undersurface white; underwing coverts and inner web of under- 

 side of primaries and secondaries white. 



Measurements. — Males (10 from New Jersey, Delaware, and Mary- 

 land, collected in May), wing 59.2-62.2 (61.2), tail 46.9-50.8 (48.5), 

 culmen from base 9.9-11.9 (10.9), tarsus 17.5-19.7 (18.3) mm. 



Females (10 from New Jersey, Maryland, and Virginia, collected 

 in May), wing 59.0-63.0 (60.6), tail 46.4-52.5 (48.5), culmen from 

 base 10.7-12.8 (11.5), tarsus 15.9-19.8 (18.4) mm. 



Accidental. Known definitely in Panama from 2 specimens collected 

 in Bocas del Toro. One, USNM no. 483154, a female, was caught on 

 February 7, 1963, in a mist net in a fruit grove at Punta Vieja on Isla 

 Bastimentos by C. O. Handley and F. M. Greenwell. They noted that 

 the skull was ossified, the ovary measured 5x3 mm, and the iris was 

 white. The second specimen, USNM no. 486555, unsexed, also came 

 from a mist net, at Almirante, on October 16, 1964 (Hicks, Condor, 

 1967, p. 90). This northern race of the White-eyed Vireo (breeding 

 in eastern United States) normally winters south to Guatemala, north- 

 ern Honduras, and western Cuba (A. O. U. Check-list of North Amer- 

 ican Birds, 1957, p. 467); Bocas del Toro is more than 640 km south 

 of its usual southern limit. 



