248 REVIEW OF AMERICAN BIRDS. [PART I. 
scarcely extending over occiput. Wing nearly 
as long as middle tail feather . : . - mesochrysus. 
Cheeks, ocular region, and lores chestnut. A superciliary 
stripe bright yellow, bordered above by dusky. 
Whole under parts yellow = : = belli. 
Basileuterus melanogenys. 
Basileuterus melanogenys, BARD, 0. 8. 
Hab. High-lands of Costa Rica. 
(No. 30,497.) Above ashy olive, the quills and tail feathers edged with 
brighter, edges of the latter slightly tinged with rufous. A square patch of. 
chestnut brown on top of head. The sides of head black, encircling the eyes, 
each feather white in the centre. A broad stripe of white from base of bill 
passing over the eye, and margined above by black, which thus borders the 
rufous crown externally. The forehead mixed black and white. Beneath 
dull whitish, the sides and to some extent the breast, tinged with olivaceous 
ash; the chin dusky on account of the blackish tips of the feathers. 
The white feathers about the head have all a tendency to black tips and 
edges, producing the black markings—very few feathers being entirely black. 
The wings are a little shorter than the tail. The bill is more slender, and 
the culmen less decurved than in most species of its section. 
Total length, 5.50; wing, 2.50; tail, 2.65; graduation of tail, .35; differ- 
ence between Ist and 4th quills, .40; length of bill from forehead, .50, from 
nostril, .80; along gape, .58; tarsus, .85. 
Smith-|Collec-| Sex ; When : 
sonian| tor’s | and Locality. Gollentea Received from Collected by 
No. No. | Age ‘ 
30,497 | 117 Costa Rica (San Dr. Vv. Drantzinss ||) Gh aoe 
30,498 | 118 | Juv. be ORG) T)- Cha PRIN | Bll gee Lae eetemne 
(30,497.) Type of species. 
Basileuterus rufifroms. 
Setophaga rufifrons, Swainsoy, Animals in Menageries, 1838, 294.—Bon. 
Conspectus, 314.—Basileuterus rufifrons, Bon. Consp. 1850, 314.— 
Scrarer, P. Z. 8. 1856, 291 (Cordova) ; 1858, 299 (Oaxaca).—Is. 
Catal. 1861, 35, no. 210.—Barrp, Birds N. Am. 1858, 296. 
FTab. Mexico; northwest to Mazatlan. 
Whole top of the head with the ears reddish or chestnut brown; nape and 
sides of neck ashy. Rest of upper parts olive green, with an ashy tinge of 
greater or less intensity. A white stripe from each side of the bill (meeting 
narrowly on the forehead) over the eye, and another pair from lower jaw 
meeting on the chin and passing beneath the eye, meets its supra-ocular fellow , 
behind the ears, their junctions, however, concealed by the chestnut ear 
coyerts. Lores, and a short space behind the eye dusky. Throat and breast 
