BIRDS OF NORTH AWD MIDDLE AMERICA. 221 



Colombia).— Allen, Bull. Am. Mus. N. H., xiii, 1900, 172 (Bonda, etc., 

 Santa Marta; crit. ). 

 (?) Rylophilus hypoxanthus (not of Pelzebi) Salvin and Godman, Ibis, 1880, 

 118 (Valencia, Venezuela)." 



PACHYSYLVIA VIRIDIFLAVA (Lawrence). 

 YELLOW-GREEN PACHYSYLVIA. 



Adults (sexes alike). — Above plain yellowish olive-green, slightly 

 duller and grayer or browner on pileum; shafts of rectrices blackish; 

 loral, auricular and malar regions pale olive-grayish; chin dull whitish, 

 deepening into a more grayish hue on upper throat, the lower throat, 

 chest, and anterior portion of sides pale, yellowish olive or bufly olive; 

 rest of under parts naples yellow; under wing-coverts lighter and 

 clearer yellow (approaching canary yellow); bill usually pale brown, 

 sometimes blackish;* iris dark brown; '^^ legs and feet pale brownish 

 (in dried skins). 



Adult mfflZe.— Length (skins), 108-113 (111); wing, 56; tail, 49; 

 exposed culmen, 11-11.5 (11.2); tarsus, 18-19 (18.7); middle toe, 

 10-11 (10.7).'^ 



Adult female.— Juength 106-117 (111.5); wing, 53-55 (53.9); tail, 

 46-52 (48.7); exposed culmen, 11-12 (11.2); tarsus, 18-19 (18.6); 

 middle toe, 10-11 (10.5).^ 



Isthmus of Panama, north to Veragua. 



HylopMlus viridiflatms Lawkbnce, Ann. Lye. Nat. Hist. N. Y., vii, 1861, 324 

 (Panama B. E. ; coll. G. N". Lawrence). — Sclatbk and Salvin, Proc. Zool. 

 Soc. Lond., 1864, 348 (Panama R. R.).— Baikd, Review Am. Birds, 1866, 

 880 (Panama).— Salvin, Proc. Zool. Soc. Lond., 1867, 137 (Santa F6, Vera- 

 gua); 1870, 184 (Bugaba, Veragua). — Sclater, Ibis, 1881, 309 (monogr.). — 

 Salvin and Godman, Biol. Centr.-Am., Aves, i, 1881, 208, pi. 13, fig. 1. 



[HylophUus] viridiflavus Sclater and Salvin, Nom. Av. Neotr., 1873, 12. 



HylopMlus flavipes viridiflavus Bangs, Auk, xviii, Oct., 1901, 368 (Divala and 

 David, Ohiriqui). 



[Hylophilua flavipesj ft- Northern Race [H. viridiflavus) Gadow, Cat. Birds Brit. 

 Mus., viii, 1883, 312. 



HylopMlus flavipes (not of Lafresnaye)^ Gadow, Cat. Birds Brit. Mus., viii, 1883, 

 312, part. 



Genus VIREOLANIUS Du Bus. 



Vireolanius DnBus, Esquisses Ornith., 1850, pi. 26. (Type T'. meliiophrys Du 

 Bus.) 



a According to Allen, Bull. Am. Mus. N. H., xiii, 172. I have not seen a%pecl- 

 men from the locality mentioned. 



6 In five adults from Panama the bill is pale brown (the mandible still paler); 

 in one specimen from Panama the maxilla is blackish on culmen and below nostrils, 

 the rest pale hom color, the mandible blackish laterally, pale horn color on under 

 side; in two specimens from Chiriqui (Divala and David) the bill is black. 



"Heyde, manuscript. 



d Three specimens. 



« Four specimens. 



