SUBGENUS RHYNCHOFALCO, RIDGWAY.

Species.

=F. femoralis.= Wing, 9.30–11.60; tail, 6.30–8.80; culmen, .60–.80;

tarsus, 1.62–2.00; middle toe, 1.35–1.70. Second and third quills

longest; first equal to or shorter than fourth. _Adult_ (sexes

similar). Above uniform plumbeous, the secondaries broadly tipped

with whitish. Tail darker terminally, crossed by about eight narrow,

continuous bands of white, and tipped with the same. A broad

postocular stripe, middle area of the auriculars, and entire throat

and jugulum, white, unvariegated; the latter with a semicircular

outline posteriorly, and the former changing to orange-rufous on the

occiput, where the stripes of the two sides are confluent. Sides

entirely uniform blackish (confluent on the middle of the abdomen),

with narrow bars of white; posterior lower parts immaculate light

ochraceous. _Young_ similar, but the jugulum with longitudinal stripes

of blackish. _Hab._ Whole of Tropical America, exclusive of the West

Indies, north to the southern border of the United States.

[Illustration:

=42076=, ♀. ½

=42076=, ♀. ¼

=42076=, ♀.]

Falco (Rhynchofalco) femoralis, TEMMINCK.

A History of North American Birds; Land Birds; Vol. 3 of 3 · 第 93 / 607 题