70 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
two seen, which suggests that this is another species in which male and 
female remain associated throughout the year. 
While these are listed as the typical form they appear definitely paler 
than specimens from Veracruz. With more material I believe that the 
southern race named pallidipectus by Ridgway will prove separable. 
HYLOPHILUS DECURTATUS DECURTATUS (Bonaparte) 
Sylvicola decurtata BONAPARTE, Proc. Zool. Soc. London, 1837 (June 1838), 
p. 118 (Guatemala). 
On November 6 and again on November 8 in the section called 
Los Cuadros on the Hacienda Santa Maria I shot one of these little 
vireos from a chattering flock in the tops of the lower forest trees. One 
was seen on November 10. 
The two taken are definitely duller than specimens of this species 
from near Liberia and agree with those from eastern Costa Rica to 
Guatemala. They were secured at the head of the Caribbean drain- 
age on the mountain, and are another indication of the Caribbean 
influence on the avifauna of this region. 
It may be noted that Griscom ¥ has recorded this race from north- 
western Costa Rica. 
HYLOPHILUS DECURTATUS PALLIDUS (Dickey and van Rossem) 
Pachysylvia decurtata pallida Dickny and vAN RossrEMm, Proc. Biol. Soc. Wash- 
ington, vol. 40, Jan. 8, 1927, p. 4 (Puerto del Triunfo, Departamento Usulutan, 
El Salvador). 
Near Liberia I found these vireos in small flocks in woodland along 
the Rio Liberia and the Rio Colorado and in the larger groves through 
the pastureland to the south of town. Specimens were taken on Oc- 
tober 26 and 31 and November 1 and 2. | 
The eight birds obtained are definitely brighter, more yellowish 
green above, lighter gray on the crown, lighter more yellowish green 
on the sides and under tail coverts, and whiter on the breast and fore- 
neck than specimens from eastern Costa Rica to Guatemala, in which 
they agree with pallidus described originally from El Salvador, and 
known later from western Nicaragua. They represent an extension of 
range for this bird. Further material should be obtained to deter- 
mine whether pallidus ranges father to the south in the Nicoya Penin- 
sula. Two birds collected by Ridgway at Pigres near the mouth of 
the Rio Grande de Tarcoles, on the Gulf of Nicoya south of Punta- 
arenas, belong with typical decurtatus, though showing some influence 
of the darker headed pusillus of western Panama. 
The races of this species are to be recognized on color and not on 
size. It may be noted that Hylophilus minor, and its race darienensis 
of eastern Panamd, are specifically distinct and are not races of 
19 Bull. Amer, Mus. Nat. Hist., vol. 64, 1932 p. 320. 
