300 NORTH AMERICAN BIRDS. 
Genus NYCTIDROMUS Govutp. (Page 297, pl. LKXXVIIL,, fig. 2.) 
Species. 
Adult male: Above finely mottled brownish gray or brownish, the crown with 
a central series of broad black streaks, the scapulars handsomely variegated with 
black and buff in large, somewhat V-shaped, markings; base of six outer primaries 
white, forming a large patch over both webs, the rest of the quills plain dusky ; 
outer tail-feathers nearly uniform blackish; next mostly white, with outer web 
chiefly dusky; third also mostly white, the outer web edged with dusky; four 
middle tail-feathers without any white, their ground-color mottled brownish gray, 
relieved by irregular “ herring-bone” blotches of dusky along the shaft; lower parts 
buffy, regularly barred with dusky, the throat crossed by a distinct collar of pure 
white ; length 12.00-13.50, wing 6.75-7.50, tail 6.75-7.40. Adult female: Similar to 
the male, but smaller, more brownish, the colors duller and less handsomely con- 
trasted, the white of quills and tail-feathers more restricted, that of former occu- 
pying only four outer quills, of latter occupying only terminal portion (for .75- 
1.75) of the inner webs of second and third feathers, the blackish basal portion of 
which is broadly, though more or less irregularly, barred and mottled with ochra- 
ceous; length about 10.50-11.50, wing 6.00-6.30, tail 5.80-6.00. Young: Much 
paler than adult, the lower parts nearly immaculate pale dull buffy, the wing- 
coverts and tertials with this color prevailing; dark markings on top of head in 
form of somewhat triangular, drop-shaped, or diamond-shaped spots, each imme- 
diately surrounded by a paler tint than the general surface; sexes distinguished as 
in adult stages. ggs deposited on ground or dead leaves in woods or thickets, 
1.23 x .89, deep pinkish buff, or salmon-buff, sparsely speckled or spotted with rusty 
or cinnamon. Hab Southern Mexico and north to lower Rio Grande Valley in 
TOXAS cs snsicinocasiehpenmnareneeicessecatetee 419. N. albicollis merrilli Senn. Parauque. 
Genus CHORDEILES Swainson. (Page 297, pl. LXXXVIL,, fig. 2.) 
Species. 
Common Cuaracters.—Above mottled with blackish and grayish (sometimes 
varied, more or less, with ochraceous), the tail more or less distinctly banded with 
dusky ; quills chiefly plain dusky, several of the longer ones marked near the 
middle portion with a more or less extensive white or buffy spot; lower parts 
whitish or buffy, barred with dusky, the throat with a more or less conspicuous 
A-shaped white or buffy patch ; adult males with a broad bar of white across tail 
near tip (except on middle feathers). Young: Much more finely and profusely 
mottled than in adults, with less of dusky above and dusky bars on lower parts less 
distinct; upper parts often more or less suffused or mixed (especially in C. texensis 
and C. virginianus henry?) with pale cinnamon or rusty buff. 
a’. White or (rarely) buffy spot or patch on quills situated mainly or wholly 
anterior to tip of seventh quill, the space between this white patch and the 
